diff --git a/.changelog/36.txt b/.changelog/36.txt
new file mode 100644
index 00000000..3be4d3b0
--- /dev/null
+++ b/.changelog/36.txt
@@ -0,0 +1,3 @@
+```release-note:feature
+Introduced `setvalidator` package with `ValuesAre()` validation function
+```
\ No newline at end of file
diff --git a/.changelog/40.txt b/.changelog/40.txt
new file mode 100644
index 00000000..b966ea7f
--- /dev/null
+++ b/.changelog/40.txt
@@ -0,0 +1,3 @@
+```release-note:feature
+Added `SizeAtLeast()`, `SizeAtMost()` and `SizeBetween` validation functions to `setvalidator` package
+```
\ No newline at end of file
diff --git a/setvalidator/doc.go b/setvalidator/doc.go
new file mode 100644
index 00000000..31e34c2d
--- /dev/null
+++ b/setvalidator/doc.go
@@ -0,0 +1,2 @@
+// Package setvalidator provides validators for types.Set attributes.
+package setvalidator
diff --git a/setvalidator/size_at_least.go b/setvalidator/size_at_least.go
new file mode 100644
index 00000000..c3d99e3b
--- /dev/null
+++ b/setvalidator/size_at_least.go
@@ -0,0 +1,58 @@
+package setvalidator
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/hashicorp/terraform-plugin-framework/tfsdk"
+
+	"github.com/hashicorp/terraform-plugin-framework-validators/validatordiag"
+)
+
+var _ tfsdk.AttributeValidator = sizeAtLeastValidator{}
+
+// sizeAtLeastValidator validates that set contains at least min elements.
+type sizeAtLeastValidator struct {
+	min int
+}
+
+// Description describes the validation in plain text formatting.
+func (v sizeAtLeastValidator) Description(ctx context.Context) string {
+	return fmt.Sprintf("set must contain at least %d elements", v.min)
+}
+
+// MarkdownDescription describes the validation in Markdown formatting.
+func (v sizeAtLeastValidator) MarkdownDescription(ctx context.Context) string {
+	return v.Description(ctx)
+}
+
+// Validate performs the validation.
+func (v sizeAtLeastValidator) Validate(ctx context.Context, req tfsdk.ValidateAttributeRequest, resp *tfsdk.ValidateAttributeResponse) {
+	elems, ok := validateSet(ctx, req, resp)
+	if !ok {
+		return
+	}
+
+	if len(elems) < v.min {
+		resp.Diagnostics.Append(validatordiag.AttributeValueDiagnostic(
+			req.AttributePath,
+			v.Description(ctx),
+			fmt.Sprintf("%d", len(elems)),
+		))
+
+		return
+	}
+}
+
+// SizeAtLeast returns an AttributeValidator which ensures that any configured
+// attribute value:
+//
+//     - Is a Set.
+//     - Contains at least min elements.
+//
+// Null (unconfigured) and unknown (known after apply) values are skipped.
+func SizeAtLeast(min int) tfsdk.AttributeValidator {
+	return sizeAtLeastValidator{
+		min: min,
+	}
+}
diff --git a/setvalidator/size_at_least_test.go b/setvalidator/size_at_least_test.go
new file mode 100644
index 00000000..3d910f5e
--- /dev/null
+++ b/setvalidator/size_at_least_test.go
@@ -0,0 +1,90 @@
+package setvalidator
+
+import (
+	"context"
+	"testing"
+
+	"github.com/hashicorp/terraform-plugin-framework/attr"
+	"github.com/hashicorp/terraform-plugin-framework/tfsdk"
+	"github.com/hashicorp/terraform-plugin-framework/types"
+	"github.com/hashicorp/terraform-plugin-go/tftypes"
+)
+
+func TestSizeAtLeastValidator(t *testing.T) {
+	t.Parallel()
+
+	type testCase struct {
+		val         attr.Value
+		min         int
+		expectError bool
+	}
+	tests := map[string]testCase{
+		"not a Set": {
+			val:         types.Bool{Value: true},
+			expectError: true,
+		},
+		"Set unknown": {
+			val: types.Set{
+				Unknown:  true,
+				ElemType: types.StringType,
+			},
+			expectError: false,
+		},
+		"Set null": {
+			val: types.Set{
+				Null:     true,
+				ElemType: types.StringType,
+			},
+			expectError: false,
+		},
+		"Set size greater than min": {
+			val: types.Set{
+				ElemType: types.StringType,
+				Elems: []attr.Value{
+					types.String{Value: "first"},
+					types.String{Value: "second"},
+				},
+			},
+			min:         1,
+			expectError: false,
+		},
+		"Set size equal to min": {
+			val: types.Set{
+				ElemType: types.StringType,
+				Elems: []attr.Value{
+					types.String{Value: "first"},
+				},
+			},
+			min:         1,
+			expectError: false,
+		},
+		"Set size less than min": {
+			val: types.Set{
+				ElemType: types.StringType,
+				Elems:    []attr.Value{},
+			},
+			min:         1,
+			expectError: true,
+		},
+	}
+
+	for name, test := range tests {
+		name, test := name, test
+		t.Run(name, func(t *testing.T) {
+			request := tfsdk.ValidateAttributeRequest{
+				AttributePath:   tftypes.NewAttributePath().WithAttributeName("test"),
+				AttributeConfig: test.val,
+			}
+			response := tfsdk.ValidateAttributeResponse{}
+			SizeAtLeast(test.min).Validate(context.TODO(), request, &response)
+
+			if !response.Diagnostics.HasError() && test.expectError {
+				t.Fatal("expected error, got no error")
+			}
+
+			if response.Diagnostics.HasError() && !test.expectError {
+				t.Fatalf("got unexpected error: %s", response.Diagnostics)
+			}
+		})
+	}
+}
diff --git a/setvalidator/size_at_most.go b/setvalidator/size_at_most.go
new file mode 100644
index 00000000..8fe1cc91
--- /dev/null
+++ b/setvalidator/size_at_most.go
@@ -0,0 +1,58 @@
+package setvalidator
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/hashicorp/terraform-plugin-framework/tfsdk"
+
+	"github.com/hashicorp/terraform-plugin-framework-validators/validatordiag"
+)
+
+var _ tfsdk.AttributeValidator = sizeAtMostValidator{}
+
+// sizeAtMostValidator validates that set contains at most max elements.
+type sizeAtMostValidator struct {
+	max int
+}
+
+// Description describes the validation in plain text formatting.
+func (v sizeAtMostValidator) Description(ctx context.Context) string {
+	return fmt.Sprintf("set must contain at most %d elements", v.max)
+}
+
+// MarkdownDescription describes the validation in Markdown formatting.
+func (v sizeAtMostValidator) MarkdownDescription(ctx context.Context) string {
+	return v.Description(ctx)
+}
+
+// Validate performs the validation.
+func (v sizeAtMostValidator) Validate(ctx context.Context, req tfsdk.ValidateAttributeRequest, resp *tfsdk.ValidateAttributeResponse) {
+	elems, ok := validateSet(ctx, req, resp)
+	if !ok {
+		return
+	}
+
+	if len(elems) > v.max {
+		resp.Diagnostics.Append(validatordiag.AttributeValueDiagnostic(
+			req.AttributePath,
+			v.Description(ctx),
+			fmt.Sprintf("%d", len(elems)),
+		))
+
+		return
+	}
+}
+
+// SizeAtMost returns an AttributeValidator which ensures that any configured
+// attribute value:
+//
+//     - Is a Set.
+//     - Contains at most max elements.
+//
+// Null (unconfigured) and unknown (known after apply) values are skipped.
+func SizeAtMost(max int) tfsdk.AttributeValidator {
+	return sizeAtMostValidator{
+		max: max,
+	}
+}
diff --git a/setvalidator/size_at_most_test.go b/setvalidator/size_at_most_test.go
new file mode 100644
index 00000000..781d92cb
--- /dev/null
+++ b/setvalidator/size_at_most_test.go
@@ -0,0 +1,93 @@
+package setvalidator
+
+import (
+	"context"
+	"testing"
+
+	"github.com/hashicorp/terraform-plugin-framework/attr"
+	"github.com/hashicorp/terraform-plugin-framework/tfsdk"
+	"github.com/hashicorp/terraform-plugin-framework/types"
+	"github.com/hashicorp/terraform-plugin-go/tftypes"
+)
+
+func TestSizeAtMostValidator(t *testing.T) {
+	t.Parallel()
+
+	type testCase struct {
+		val         attr.Value
+		max         int
+		expectError bool
+	}
+	tests := map[string]testCase{
+		"not a Set": {
+			val:         types.Bool{Value: true},
+			expectError: true,
+		},
+		"Set unknown": {
+			val: types.Set{
+				Unknown:  true,
+				ElemType: types.StringType,
+			},
+			expectError: false,
+		},
+		"Set null": {
+			val: types.Set{
+				Null:     true,
+				ElemType: types.StringType,
+			},
+			expectError: false,
+		},
+		"Set size less than max": {
+			val: types.Set{
+				ElemType: types.StringType,
+				Elems: []attr.Value{
+					types.String{Value: "first"},
+				},
+			},
+			max:         2,
+			expectError: false,
+		},
+		"Set size equal to max": {
+			val: types.Set{
+				ElemType: types.StringType,
+				Elems: []attr.Value{
+					types.String{Value: "first"},
+					types.String{Value: "second"},
+				},
+			},
+			max:         2,
+			expectError: false,
+		},
+		"Set size greater than max": {
+			val: types.Set{
+				ElemType: types.StringType,
+				Elems: []attr.Value{
+					types.String{Value: "first"},
+					types.String{Value: "second"},
+					types.String{Value: "third"},
+				}},
+			max:         2,
+			expectError: true,
+		},
+	}
+
+	for name, test := range tests {
+		name, test := name, test
+		t.Run(name, func(t *testing.T) {
+			request := tfsdk.ValidateAttributeRequest{
+				AttributePath:   tftypes.NewAttributePath().WithAttributeName("test"),
+				AttributeConfig: test.val,
+			}
+			response := tfsdk.ValidateAttributeResponse{}
+			SizeAtMost(test.max).Validate(context.TODO(), request, &response)
+
+			if !response.Diagnostics.HasError() && test.expectError {
+				t.Fatal("expected error, got no error")
+			}
+
+			if response.Diagnostics.HasError() && !test.expectError {
+				t.Fatalf("got unexpected error: %s", response.Diagnostics)
+			}
+		})
+	}
+}
diff --git a/setvalidator/size_between.go b/setvalidator/size_between.go
new file mode 100644
index 00000000..894d327a
--- /dev/null
+++ b/setvalidator/size_between.go
@@ -0,0 +1,61 @@
+package setvalidator
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/hashicorp/terraform-plugin-framework/tfsdk"
+
+	"github.com/hashicorp/terraform-plugin-framework-validators/validatordiag"
+)
+
+var _ tfsdk.AttributeValidator = sizeBetweenValidator{}
+
+// sizeBetweenValidator validates that set contains at least min elements
+// and at most max elements.
+type sizeBetweenValidator struct {
+	min int
+	max int
+}
+
+// Description describes the validation in plain text formatting.
+func (v sizeBetweenValidator) Description(ctx context.Context) string {
+	return fmt.Sprintf("set must contain at least %d elements and at most %d elements", v.min, v.max)
+}
+
+// MarkdownDescription describes the validation in Markdown formatting.
+func (v sizeBetweenValidator) MarkdownDescription(ctx context.Context) string {
+	return v.Description(ctx)
+}
+
+// Validate performs the validation.
+func (v sizeBetweenValidator) Validate(ctx context.Context, req tfsdk.ValidateAttributeRequest, resp *tfsdk.ValidateAttributeResponse) {
+	elems, ok := validateSet(ctx, req, resp)
+	if !ok {
+		return
+	}
+
+	if len(elems) < v.min || len(elems) > v.max {
+		resp.Diagnostics.Append(validatordiag.AttributeValueDiagnostic(
+			req.AttributePath,
+			v.Description(ctx),
+			fmt.Sprintf("%d", len(elems)),
+		))
+
+		return
+	}
+}
+
+// SizeBetween returns an AttributeValidator which ensures that any configured
+// attribute value:
+//
+//     - Is a Set.
+//     - Contains at least min elements and at most max elements.
+//
+// Null (unconfigured) and unknown (known after apply) values are skipped.
+func SizeBetween(min, max int) tfsdk.AttributeValidator {
+	return sizeBetweenValidator{
+		min: min,
+		max: max,
+	}
+}
diff --git a/setvalidator/size_between_test.go b/setvalidator/size_between_test.go
new file mode 100644
index 00000000..5c5e7997
--- /dev/null
+++ b/setvalidator/size_between_test.go
@@ -0,0 +1,133 @@
+package setvalidator
+
+import (
+	"context"
+	"testing"
+
+	"github.com/hashicorp/terraform-plugin-framework/attr"
+	"github.com/hashicorp/terraform-plugin-framework/tfsdk"
+	"github.com/hashicorp/terraform-plugin-framework/types"
+	"github.com/hashicorp/terraform-plugin-go/tftypes"
+)
+
+func TestSizeBetweenValidator(t *testing.T) {
+	t.Parallel()
+
+	type testCase struct {
+		val         attr.Value
+		min         int
+		max         int
+		expectError bool
+	}
+	tests := map[string]testCase{
+		"not a Set": {
+			val:         types.Bool{Value: true},
+			expectError: true,
+		},
+		"Set unknown": {
+			val: types.Set{
+				Unknown:  true,
+				ElemType: types.StringType,
+			},
+			expectError: false,
+		},
+		"Set null": {
+			val: types.Set{
+				Null:     true,
+				ElemType: types.StringType,
+			},
+			expectError: false,
+		},
+		"Set size greater than min": {
+			val: types.Set{
+				ElemType: types.StringType,
+				Elems: []attr.Value{
+					types.String{Value: "first"},
+					types.String{Value: "second"},
+				},
+			},
+			min:         1,
+			max:         3,
+			expectError: false,
+		},
+		"Set size equal to min": {
+			val: types.Set{
+				ElemType: types.StringType,
+				Elems: []attr.Value{
+					types.String{Value: "first"},
+				},
+			},
+			min:         1,
+			max:         3,
+			expectError: false,
+		},
+		"Set size less than max": {
+			val: types.Set{
+				ElemType: types.StringType,
+				Elems: []attr.Value{
+					types.String{Value: "first"},
+					types.String{Value: "second"},
+				},
+			},
+			min:         1,
+			max:         3,
+			expectError: false,
+		},
+		"Set size equal to max": {
+			val: types.Set{
+				ElemType: types.StringType,
+				Elems: []attr.Value{
+					types.String{Value: "first"},
+					types.String{Value: "second"},
+					types.String{Value: "third"},
+				},
+			},
+			min:         1,
+			max:         3,
+			expectError: false,
+		},
+		"Set size less than min": {
+			val: types.Set{
+				ElemType: types.StringType,
+				Elems:    []attr.Value{},
+			},
+			min:         1,
+			max:         3,
+			expectError: true,
+		},
+		"Set size greater than max": {
+			val: types.Set{
+				ElemType: types.StringType,
+				Elems: []attr.Value{
+					types.String{Value: "first"},
+					types.String{Value: "second"},
+					types.String{Value: "third"},
+					types.String{Value: "fourth"},
+				},
+			},
+			min:         1,
+			max:         3,
+			expectError: true,
+		},
+	}
+
+	for name, test := range tests {
+		name, test := name, test
+		t.Run(name, func(t *testing.T) {
+			request := tfsdk.ValidateAttributeRequest{
+				AttributePath:   tftypes.NewAttributePath().WithAttributeName("test"),
+				AttributeConfig: test.val,
+			}
+			response := tfsdk.ValidateAttributeResponse{}
+			SizeBetween(test.min, test.max).Validate(context.TODO(), request, &response)
+
+			if !response.Diagnostics.HasError() && test.expectError {
+				t.Fatal("expected error, got no error")
+			}
+
+			if response.Diagnostics.HasError() && !test.expectError {
+				t.Fatalf("got unexpected error: %s", response.Diagnostics)
+			}
+		})
+	}
+}
diff --git a/setvalidator/type_validation.go b/setvalidator/type_validation.go
new file mode 100644
index 00000000..60ba6613
--- /dev/null
+++ b/setvalidator/type_validation.go
@@ -0,0 +1,28 @@
+package setvalidator
+
+import (
+	"context"
+
+	"github.com/hashicorp/terraform-plugin-framework/attr"
+	"github.com/hashicorp/terraform-plugin-framework/tfsdk"
+	"github.com/hashicorp/terraform-plugin-framework/types"
+)
+
+// validateSet ensures that the request contains a Set value.
+func validateSet(ctx context.Context, request tfsdk.ValidateAttributeRequest, response *tfsdk.ValidateAttributeResponse) ([]attr.Value, bool) {
+	var s types.Set
+
+	diags := tfsdk.ValueAs(ctx, request.AttributeConfig, &s)
+
+	if diags.HasError() {
+		response.Diagnostics = append(response.Diagnostics, diags...)
+
+		return nil, false
+	}
+
+	if s.Unknown || s.Null {
+		return nil, false
+	}
+
+	return s.Elems, true
+}
diff --git a/setvalidator/type_validation_test.go b/setvalidator/type_validation_test.go
new file mode 100644
index 00000000..98c83cc0
--- /dev/null
+++ b/setvalidator/type_validation_test.go
@@ -0,0 +1,82 @@
+package setvalidator
+
+import (
+	"context"
+	"testing"
+
+	"github.com/google/go-cmp/cmp"
+	"github.com/hashicorp/terraform-plugin-framework/attr"
+	"github.com/hashicorp/terraform-plugin-framework/tfsdk"
+	"github.com/hashicorp/terraform-plugin-framework/types"
+	"github.com/hashicorp/terraform-plugin-go/tftypes"
+)
+
+func TestValidateSet(t *testing.T) {
+	t.Parallel()
+
+	testCases := map[string]struct {
+		request          tfsdk.ValidateAttributeRequest
+		expectedSetElems []attr.Value
+		expectedOk       bool
+	}{
+		"invalid-type": {
+			request: tfsdk.ValidateAttributeRequest{
+				AttributeConfig: types.Bool{Value: true},
+				AttributePath:   tftypes.NewAttributePath().WithAttributeName("test"),
+			},
+			expectedSetElems: nil,
+			expectedOk:       false,
+		},
+		"set-null": {
+			request: tfsdk.ValidateAttributeRequest{
+				AttributeConfig: types.Set{Null: true},
+				AttributePath:   tftypes.NewAttributePath().WithAttributeName("test"),
+			},
+			expectedSetElems: nil,
+			expectedOk:       false,
+		},
+		"set-unknown": {
+			request: tfsdk.ValidateAttributeRequest{
+				AttributeConfig: types.Set{Unknown: true},
+				AttributePath:   tftypes.NewAttributePath().WithAttributeName("test"),
+			},
+			expectedSetElems: nil,
+			expectedOk:       false,
+		},
+		"set-value": {
+			request: tfsdk.ValidateAttributeRequest{
+				AttributeConfig: types.Set{
+					ElemType: types.StringType,
+					Elems: []attr.Value{
+						types.String{Value: "first"},
+						types.String{Value: "second"},
+					},
+				},
+				AttributePath: tftypes.NewAttributePath().WithAttributeName("test"),
+			},
+			expectedSetElems: []attr.Value{
+				types.String{Value: "first"},
+				types.String{Value: "second"},
+			},
+			expectedOk: true,
+		},
+	}
+
+	for name, testCase := range testCases {
+		name, testCase := name, testCase
+
+		t.Run(name, func(t *testing.T) {
+			t.Parallel()
+
+			gotSetElems, gotOk := validateSet(context.Background(), testCase.request, &tfsdk.ValidateAttributeResponse{})
+
+			if diff := cmp.Diff(gotSetElems, testCase.expectedSetElems); diff != "" {
+				t.Errorf("unexpected set difference: %s", diff)
+			}
+
+			if diff := cmp.Diff(gotOk, testCase.expectedOk); diff != "" {
+				t.Errorf("unexpected ok difference: %s", diff)
+			}
+		})
+	}
+}
diff --git a/setvalidator/values_are.go b/setvalidator/values_are.go
new file mode 100644
index 00000000..89c13b6c
--- /dev/null
+++ b/setvalidator/values_are.go
@@ -0,0 +1,76 @@
+package setvalidator
+
+import (
+	"context"
+	"fmt"
+	"strings"
+
+	"github.com/hashicorp/terraform-plugin-framework/tfsdk"
+)
+
+var _ tfsdk.AttributeValidator = valuesAreValidator{}
+
+// valuesAreValidator validates that each set member validates against each of the value validators.
+type valuesAreValidator struct {
+	valueValidators []tfsdk.AttributeValidator
+}
+
+// Description describes the validation in plain text formatting.
+func (v valuesAreValidator) Description(ctx context.Context) string {
+	var descriptions []string
+	for _, validator := range v.valueValidators {
+		descriptions = append(descriptions, validator.Description(ctx))
+	}
+
+	return fmt.Sprintf("value must satisfy all validations: %s", strings.Join(descriptions, " + "))
+}
+
+// MarkdownDescription describes the validation in Markdown formatting.
+func (v valuesAreValidator) MarkdownDescription(ctx context.Context) string {
+	return v.Description(ctx)
+}
+
+// Validate performs the validation.
+func (v valuesAreValidator) Validate(ctx context.Context, req tfsdk.ValidateAttributeRequest, resp *tfsdk.ValidateAttributeResponse) {
+	elems, ok := validateSet(ctx, req, resp)
+	if !ok {
+		return
+	}
+
+	for _, elem := range elems {
+		value, err := elem.ToTerraformValue(ctx)
+		if err != nil {
+			resp.Diagnostics.AddError(
+				"Attribute Conversion Error During Set Element Validation",
+				"An unexpected error was encountered when handling the a Set element. "+
+					"This is always an issue in terraform-plugin-framework used to implement the provider and should be reported to the provider developers.\n\n"+
+					"Please report this to the provider developer:\n\n"+
+					"Attribute Conversion Error During Set Element Validation.",
+			)
+			return
+		}
+
+		request := tfsdk.ValidateAttributeRequest{
+			AttributePath:   req.AttributePath.WithElementKeyValue(value),
+			AttributeConfig: elem,
+			Config:          req.Config,
+		}
+
+		for _, validator := range v.valueValidators {
+			validator.Validate(ctx, request, resp)
+		}
+	}
+}
+
+// ValuesAre returns an AttributeValidator which ensures that any configured
+// attribute value:
+//
+//     - Is a Set.
+//     - Contains Set elements, each of which validate against each value validator.
+//
+// Null (unconfigured) and unknown (known after apply) values are skipped.
+func ValuesAre(valueValidators ...tfsdk.AttributeValidator) tfsdk.AttributeValidator {
+	return valuesAreValidator{
+		valueValidators: valueValidators,
+	}
+}
diff --git a/setvalidator/values_are_test.go b/setvalidator/values_are_test.go
new file mode 100644
index 00000000..ce74b772
--- /dev/null
+++ b/setvalidator/values_are_test.go
@@ -0,0 +1,119 @@
+package setvalidator
+
+import (
+	"context"
+	"testing"
+
+	"github.com/hashicorp/terraform-plugin-framework/attr"
+	"github.com/hashicorp/terraform-plugin-framework/tfsdk"
+	"github.com/hashicorp/terraform-plugin-framework/types"
+	"github.com/hashicorp/terraform-plugin-go/tftypes"
+
+	"github.com/hashicorp/terraform-plugin-framework-validators/int64validator"
+	"github.com/hashicorp/terraform-plugin-framework-validators/stringvalidator"
+)
+
+func TestValuesAreValidator(t *testing.T) {
+	t.Parallel()
+
+	type testCase struct {
+		val                 attr.Value
+		valuesAreValidators []tfsdk.AttributeValidator
+		expectError         bool
+	}
+	tests := map[string]testCase{
+		"not Set": {
+			val: types.Map{
+				ElemType: types.StringType,
+			},
+			expectError: true,
+		},
+		"Set unknown": {
+			val: types.Set{
+				Unknown:  true,
+				ElemType: types.StringType,
+			},
+			expectError: false,
+		},
+		"Set null": {
+			val: types.Set{
+				Null:     true,
+				ElemType: types.StringType,
+			},
+			expectError: false,
+		},
+		"Set elems invalid": {
+			val: types.Set{
+				ElemType: types.StringType,
+				Elems: []attr.Value{
+					types.String{Value: "first"},
+					types.String{Value: "second"},
+				},
+			},
+			valuesAreValidators: []tfsdk.AttributeValidator{
+				stringvalidator.LengthAtLeast(6),
+			},
+			expectError: true,
+		},
+		"Set elems invalid for second validator": {
+			val: types.Set{
+				ElemType: types.StringType,
+				Elems: []attr.Value{
+					types.String{Value: "first"},
+					types.String{Value: "second"},
+				},
+			},
+			valuesAreValidators: []tfsdk.AttributeValidator{
+				stringvalidator.LengthAtLeast(2),
+				stringvalidator.LengthAtLeast(6),
+			},
+			expectError: true,
+		},
+		"Set elems wrong type for validator": {
+			val: types.Set{
+				ElemType: types.StringType,
+				Elems: []attr.Value{
+					types.String{Value: "first"},
+					types.String{Value: "second"},
+				},
+			},
+			valuesAreValidators: []tfsdk.AttributeValidator{
+				int64validator.AtLeast(6),
+			},
+			expectError: true,
+		},
+		"Set elems valid": {
+			val: types.Set{
+				ElemType: types.StringType,
+				Elems: []attr.Value{
+					types.String{Value: "first"},
+					types.String{Value: "second"},
+				},
+			},
+			valuesAreValidators: []tfsdk.AttributeValidator{
+				stringvalidator.LengthAtLeast(5),
+			},
+			expectError: false,
+		},
+	}
+
+	for name, test := range tests {
+		name, test := name, test
+		t.Run(name, func(t *testing.T) {
+			request := tfsdk.ValidateAttributeRequest{
+				AttributePath:   tftypes.NewAttributePath().WithAttributeName("test"),
+				AttributeConfig: test.val,
+			}
+			response := tfsdk.ValidateAttributeResponse{}
+			ValuesAre(test.valuesAreValidators...).Validate(context.TODO(), request, &response)
+
+			if !response.Diagnostics.HasError() && test.expectError {
+				t.Fatal("expected error, got no error")
+			}
+
+			if response.Diagnostics.HasError() && !test.expectError {
+				t.Fatalf("got unexpected error: %s", response.Diagnostics)
+			}
+		})
+	}
+}