diff --git a/.github/workflows/ubuntu.yml b/.github/workflows/ubuntu.yml
index 97ca346142ec1..ee765d8c01e60 100644
--- a/.github/workflows/ubuntu.yml
+++ b/.github/workflows/ubuntu.yml
@@ -60,10 +60,6 @@ jobs:
             env_file: actions-310.yaml
             pattern: "not slow and not network and not single_cpu"
             pandas_copy_on_write: "1"
-          - name: "Data Manager"
-            env_file: actions-38.yaml
-            pattern: "not slow and not network and not single_cpu"
-            pandas_data_manager: "array"
           - name: "Pypy"
             env_file: actions-pypy-38.yaml
             pattern: "not slow and not network and not single_cpu"
@@ -86,7 +82,6 @@ jobs:
       EXTRA_APT: ${{ matrix.extra_apt || '' }}
       LANG: ${{ matrix.lang || '' }}
       LC_ALL: ${{ matrix.lc_all || '' }}
-      PANDAS_DATA_MANAGER: ${{ matrix.pandas_data_manager || 'block' }}
       PANDAS_COPY_ON_WRITE: ${{ matrix.pandas_copy_on_write || '0' }}
       PANDAS_CI: ${{ matrix.pandas_ci || '1' }}
       TEST_ARGS: ${{ matrix.test_args || '' }}
@@ -97,7 +92,7 @@ jobs:
       COVERAGE: ${{ !contains(matrix.env_file, 'pypy') }}
     concurrency:
       # https://github.community/t/concurrecy-not-work-for-push/183068/7
-      group: ${{ github.event_name == 'push' && github.run_number || github.ref }}-${{ matrix.env_file }}-${{ matrix.pattern }}-${{ matrix.extra_apt || '' }}-${{ matrix.pandas_data_manager || '' }}
+      group: ${{ github.event_name == 'push' && github.run_number || github.ref }}-${{ matrix.env_file }}-${{ matrix.pattern }}-${{ matrix.extra_apt || '' }}
       cancel-in-progress: true
 
     services:
diff --git a/ci/run_tests.sh b/ci/run_tests.sh
index e6de5caf955fc..3e79e5f60cba6 100755
--- a/ci/run_tests.sh
+++ b/ci/run_tests.sh
@@ -32,18 +32,3 @@ fi
 
 echo $PYTEST_CMD
 sh -c "$PYTEST_CMD"
-
-if [[ "$PANDAS_DATA_MANAGER" != "array" && "$PYTEST_TARGET" == "pandas" ]]; then
-    # The ArrayManager tests should have already been run by PYTEST_CMD if PANDAS_DATA_MANAGER was already set to array
-    # If we're targeting specific files, e.g. test_downstream.py, don't run.
-    PYTEST_AM_CMD="PANDAS_DATA_MANAGER=array pytest -n $PYTEST_WORKERS --dist=loadfile $TEST_ARGS $COVERAGE pandas"
-
-    if [[ "$PATTERN" ]]; then
-      PYTEST_AM_CMD="$PYTEST_AM_CMD -m \"$PATTERN and arraymanager\""
-    else
-      PYTEST_AM_CMD="$PYTEST_AM_CMD -m \"arraymanager\""
-    fi
-
-    echo $PYTEST_AM_CMD
-    sh -c "$PYTEST_AM_CMD"
-fi