diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
new file mode 100644
index 000000000..c41ace778
--- /dev/null
+++ b/.github/CODEOWNERS
@@ -0,0 +1,10 @@
+# Code owners file.
+# This file controls who is tagged for review for any given pull request.
+#
+# For syntax help see:
+# https://help.github.com/en/github/creating-cloning-and-archiving-repositories/about-code-owners#codeowners-syntax
+
+
+# The yoshi-php team is the default owner for anything not
+# explicitly taken by someone else.
+*                               @googleapis/yoshi-php