diff --git a/runners/google-cloud-dataflow-java/src/main/java/org/apache/beam/runners/dataflow/DataflowPipelineJob.java b/runners/google-cloud-dataflow-java/src/main/java/org/apache/beam/runners/dataflow/DataflowPipelineJob.java
index 400f161dee2f..638e886f6451 100644
--- a/runners/google-cloud-dataflow-java/src/main/java/org/apache/beam/runners/dataflow/DataflowPipelineJob.java
+++ b/runners/google-cloud-dataflow-java/src/main/java/org/apache/beam/runners/dataflow/DataflowPipelineJob.java
@@ -57,6 +57,11 @@
   "nullness", // TODO(https://github.com/apache/beam/issues/20497)
   "Slf4jDoNotLogMessageOfExceptionExplicitly", // intended, sent full stacktrace to LOG.debug
 })
+/**
+ * Dataflow implementation of {@link PipelineResult}.
+ *
+ * <p>Note: This class represents a PipelineResult but uses a different name for historical reasons.
+ */
 public class DataflowPipelineJob implements PipelineResult {
 
   private static final Logger LOG = LoggerFactory.getLogger(DataflowPipelineJob.class);
diff --git a/sdks/java/core/src/main/java/org/apache/beam/sdk/PipelineResult.java b/sdks/java/core/src/main/java/org/apache/beam/sdk/PipelineResult.java
index 91313f3924aa..420e3ab4a5de 100644
--- a/sdks/java/core/src/main/java/org/apache/beam/sdk/PipelineResult.java
+++ b/sdks/java/core/src/main/java/org/apache/beam/sdk/PipelineResult.java
@@ -25,6 +25,16 @@
  * Result of {@link Pipeline#run()}.
  *
  * <p>This is often a job handle to an underlying data processing engine.
+ *
+ * <ul>
+ *   <li>Dataflow: {@code DataflowPipelineJob}
+ *   <li>Flink: {@code FlinkRunnerResult}
+ *   <li>Spark: {@code EvaluationContext}
+ *   <li>DirectRunner: {@code DirectPipelineResult}
+ * </ul>
+ *
+ * <p>All of the above represent implementations of {@link PipelineResult}, even if their names do
+ * not explicitly include "PipelineResult".
  */
 public interface PipelineResult {