diff --git a/packages/eslint-plugin-react-hooks/__tests__/ESLintRulesOfHooks-test.js b/packages/eslint-plugin-react-hooks/__tests__/ESLintRulesOfHooks-test.js
index 3d60a36824d..30fac44462a 100644
--- a/packages/eslint-plugin-react-hooks/__tests__/ESLintRulesOfHooks-test.js
+++ b/packages/eslint-plugin-react-hooks/__tests__/ESLintRulesOfHooks-test.js
@@ -45,6 +45,14 @@ const allTests = {
         }
       `,
     },
+    {
+      code: normalizeIndent`
+        // Valid because components with underscore prefix followed by uppercase are components.
+        function _PrivateComponent() {
+          useHook();
+        }
+      `,
+    },
     {
       syntax: 'flow',
       code: normalizeIndent`
diff --git a/packages/eslint-plugin-react-hooks/src/rules/RulesOfHooks.ts b/packages/eslint-plugin-react-hooks/src/rules/RulesOfHooks.ts
index ca82c99e2f5..3353214080b 100644
--- a/packages/eslint-plugin-react-hooks/src/rules/RulesOfHooks.ts
+++ b/packages/eslint-plugin-react-hooks/src/rules/RulesOfHooks.ts
@@ -55,7 +55,7 @@ function isHook(node: Node): boolean {
  * always start with an uppercase letter.
  */
 function isComponentName(node: Node): boolean {
-  return node.type === 'Identifier' && /^[A-Z]/.test(node.name);
+  return node.type === 'Identifier' && /^_?[A-Z]/.test(node.name);
 }
 
 function isReactFunction(node: Node, functionName: string): boolean {