diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
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index 0000000..7b701e9
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+# Lines starting with '#' are comments.
+# Each line is a file pattern followed by one or more owners.
+
+# These owners will be the default owners for everything in the repo.
+* @derobins @byrnHDF @loricooperhdf @lkurz @bmribler
+
+# Order is important. The last matching pattern has the most precedence.
+# So if a pull request only touches javascript files, only these owners
+# will be requested to review.
+/documentation/hdf5-docs/ @byrnHDF
+/hdf4/ @bmribler @byrnHDF