diff --git a/api/src/main/java/org/reactivestreams/Processor.java b/api/src/main/java/org/reactivestreams/Processor.java
new file mode 100644
index 00000000..1e231b98
--- /dev/null
+++ b/api/src/main/java/org/reactivestreams/Processor.java
@@ -0,0 +1,8 @@
+package org.reactivestreams;
+
+/**
+ * A Processor represents a processing stage—which is both a {@link Subscriber}
+ * and a {@link Publisher} and obeys the contracts of both.
+ */
+public interface Processor<T, R> extends Subscriber<T>, Publisher<R> {
+}