diff --git a/OWNERS b/OWNERS
index adf50e2a8a..43cfcc48b2 100644
--- a/OWNERS
+++ b/OWNERS
@@ -1,4 +1,11 @@
 cwallez@chromium.org
-kainino@chromium.org
 enga@chromium.org
 jiawei.shao@intel.com
+
+# Backup reviewers if needed.
+bclayton@google.com
+kainino@chromium.org
+
+per-file dawn.json=kainino@chromium.org
+per-file DEPS=*
+per-file README.md=file://docs/OWNERS
diff --git a/docs/OWNERS b/docs/OWNERS
new file mode 100644
index 0000000000..72e8ffc0db
--- /dev/null
+++ b/docs/OWNERS
@@ -0,0 +1 @@
+*
diff --git a/examples/OWNERS b/examples/OWNERS
new file mode 100644
index 0000000000..72e8ffc0db
--- /dev/null
+++ b/examples/OWNERS
@@ -0,0 +1 @@
+*
diff --git a/infra/OWNERS b/infra/OWNERS
new file mode 100644
index 0000000000..0473960e37
--- /dev/null
+++ b/infra/OWNERS
@@ -0,0 +1,2 @@
+rharrison@chromium.org
+enga@chromium.org
diff --git a/src/dawn_native/opengl/OWNERS b/src/dawn_native/opengl/OWNERS
new file mode 100644
index 0000000000..d6d6510973
--- /dev/null
+++ b/src/dawn_native/opengl/OWNERS
@@ -0,0 +1 @@
+senorblanco@chromium.org
diff --git a/src/dawn_node/OWNERS b/src/dawn_node/OWNERS
new file mode 100644
index 0000000000..d19725d4a1
--- /dev/null
+++ b/src/dawn_node/OWNERS
@@ -0,0 +1,2 @@
+amaiorano@google.com
+bclayton@google.com
diff --git a/src/tests/OWNERS b/src/tests/OWNERS
new file mode 100644
index 0000000000..b3edd60fac
--- /dev/null
+++ b/src/tests/OWNERS
@@ -0,0 +1,3 @@
+# Anybody can review tests, but please ask a top level owner for
+# harness / utility changes.
+*