diff --git a/src/griffe/mixins.py b/src/griffe/mixins.py
index 1853a2d6..f3fe7913 100644
--- a/src/griffe/mixins.py
+++ b/src/griffe/mixins.py
@@ -324,6 +324,11 @@ def is_special(self) -> bool:
         """Whether this object/alias is special ("dunder" attribute/method, starts and end with `__`)."""
         return self.name.startswith("__") and self.name.endswith("__")  # type: ignore[attr-defined]
 
+    @property
+    def is_class_private(self) -> bool:
+        """Whether this object/alias is class-private (starts with `__` and is a class member)."""
+        return self.parent and self.parent.is_class and self.name.startswith("__") and not self.name.endswith("__")  # type: ignore[attr-defined]
+
     @property
     def is_exported(self) -> bool:
         """Whether this object/alias is exported (listed in `__all__`)."""