diff --git a/.changeset/famous-hats-decide.md b/.changeset/famous-hats-decide.md
new file mode 100644
index 0000000000..e6f3a4bd5a
--- /dev/null
+++ b/.changeset/famous-hats-decide.md
@@ -0,0 +1,6 @@
+---
+'@backstage/plugin-auth-node': minor
+---
+
+Added this package, to hold shared types and functionality that other backend
+packages need to import.
diff --git a/plugins/auth-node/.eslintrc.js b/plugins/auth-node/.eslintrc.js
new file mode 100644
index 0000000000..16a033dbc6
--- /dev/null
+++ b/plugins/auth-node/.eslintrc.js
@@ -0,0 +1,3 @@
+module.exports = {
+  extends: [require.resolve('@backstage/cli/config/eslint.backend')],
+};
diff --git a/plugins/auth-node/README.md b/plugins/auth-node/README.md
new file mode 100644
index 0000000000..3558e031b2
--- /dev/null
+++ b/plugins/auth-node/README.md
@@ -0,0 +1,3 @@
+# Auth Node
+
+Common functionality and types for the Backstage `auth` plugin.
diff --git a/plugins/auth-node/api-report.md b/plugins/auth-node/api-report.md
new file mode 100644
index 0000000000..bbbf455b18
--- /dev/null
+++ b/plugins/auth-node/api-report.md
@@ -0,0 +1,8 @@
+## API Report File for "@backstage/plugin-auth-node"
+
+> Do not edit this file. It is a report generated by [API Extractor](https://api-extractor.com/).
+
+```ts
+// @public
+export const COMMON_CONSTANT = 1;
+```
diff --git a/plugins/auth-node/package.json b/plugins/auth-node/package.json
new file mode 100644
index 0000000000..3231c6993e
--- /dev/null
+++ b/plugins/auth-node/package.json
@@ -0,0 +1,32 @@
+{
+  "name": "@backstage/plugin-auth-node",
+  "version": "0.0.0",
+  "main": "src/index.ts",
+  "types": "src/index.ts",
+  "license": "Apache-2.0",
+  "private": false,
+  "publishConfig": {
+    "access": "public",
+    "main": "dist/index.cjs.js",
+    "types": "dist/index.d.ts"
+  },
+  "scripts": {
+    "build": "backstage-cli backend:build",
+    "lint": "backstage-cli lint",
+    "test": "backstage-cli test",
+    "prepack": "backstage-cli prepack",
+    "postpack": "backstage-cli postpack",
+    "clean": "backstage-cli clean"
+  },
+  "dependencies": {
+    "@backstage/backend-common": "^0.10.6",
+    "@backstage/config": "^0.1.13",
+    "winston": "^3.2.1"
+  },
+  "devDependencies": {
+    "@backstage/cli": "^0.13.1"
+  },
+  "files": [
+    "dist"
+  ]
+}
diff --git a/plugins/auth-node/src/index.ts b/plugins/auth-node/src/index.ts
new file mode 100644
index 0000000000..04d073a748
--- /dev/null
+++ b/plugins/auth-node/src/index.ts
@@ -0,0 +1,28 @@
+/*
+ * Copyright 2020 The Backstage Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Common functionality and types for the Backstage auth plugin.
+ *
+ * @packageDocumentation
+ */
+
+/**
+ * Dummy.
+ *
+ * @public
+ */
+export const COMMON_CONSTANT = 1;
diff --git a/plugins/auth-node/src/setupTests.ts b/plugins/auth-node/src/setupTests.ts
new file mode 100644
index 0000000000..d3232290a7
--- /dev/null
+++ b/plugins/auth-node/src/setupTests.ts
@@ -0,0 +1,17 @@
+/*
+ * Copyright 2020 The Backstage Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export {};
diff --git a/scripts/api-extractor.ts b/scripts/api-extractor.ts
index 808af8754d..f026adbc9b 100644
--- a/scripts/api-extractor.ts
+++ b/scripts/api-extractor.ts
@@ -218,6 +218,7 @@ const NO_WARNING_PACKAGES = [
   'packages/types',
   'packages/release-manifests',
   'packages/version-bridge',
+  'plugins/auth-node',
   'plugins/catalog-backend-module-ldap',
   'plugins/catalog-backend-module-msgraph',
   'plugins/catalog-common',