diff --git a/packages/eslint-plugin/src/util/misc.ts b/packages/eslint-plugin/src/util/misc.ts
index fa9c5ccf528..8362736bd62 100644
--- a/packages/eslint-plugin/src/util/misc.ts
+++ b/packages/eslint-plugin/src/util/misc.ts
@@ -210,6 +210,7 @@ function typeNodeRequiresParentheses(
   return (
     node.type === AST_NODE_TYPES.TSFunctionType ||
     node.type === AST_NODE_TYPES.TSConstructorType ||
+    node.type === AST_NODE_TYPES.TSConditionalType ||
     (node.type === AST_NODE_TYPES.TSUnionType && text.startsWith('|')) ||
     (node.type === AST_NODE_TYPES.TSIntersectionType && text.startsWith('&'))
   );
diff --git a/packages/eslint-plugin/tests/rules/sort-type-constituents.test.ts b/packages/eslint-plugin/tests/rules/sort-type-constituents.test.ts
index 1aa6f8a6c9a..42f9ab8153a 100644
--- a/packages/eslint-plugin/tests/rules/sort-type-constituents.test.ts
+++ b/packages/eslint-plugin/tests/rules/sort-type-constituents.test.ts
@@ -359,6 +359,7 @@ type T = 1 | string | {} | A;
         },
       ],
     },
+    "type A<T> = string | (T extends number ? 'hi' : 'there');",
   ],
   invalid: [
     ...invalid('|'),
@@ -376,5 +377,18 @@ type T = 1 | string | {} | A;
         },
       ],
     },
+    {
+      output: "type A<T> = string | (T extends number ? 'hi' : 'there');",
+      code: "type A<T> = (T extends number ? 'hi' : 'there') | string;",
+      errors: [
+        {
+          messageId: 'notSortedNamed',
+          data: {
+            type: 'Union',
+            name: 'A',
+          },
+        },
+      ],
+    },
   ],
 });