diff --git a/HISTORY.rst b/HISTORY.rst
index 3480ac25..8b876de0 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -18,6 +18,7 @@ History
 * Uncap the required Python version, to avoid problems detailed in https://iscinumpy.dev/post/bound-version-constraints/#pinning-the-python-version-is-special (`#275 <https://github.com/python-attrs/cattrs/issues/275>`_)
 * Fix `Converter.register_structure_hook_factory` and `cattrs.gen.make_dict_unstructure_fn` type annotations.
   (`#281 <https://github.com/python-attrs/cattrs/issues/281>`_)
+* Expose all error classes in the `cattr.errors` namespace. Note that it is deprecated, just use `cattrs.errors`. (`#252 <https://github.com/python-attrs/cattrs/issues/252>`_)
 
 22.1.0 (2022-04-03)
 -------------------
diff --git a/src/cattr/errors.py b/src/cattr/errors.py
index ef624ed6..af092e9c 100644
--- a/src/cattr/errors.py
+++ b/src/cattr/errors.py
@@ -1,3 +1,15 @@
-from cattrs.errors import StructureHandlerNotFoundError
+from cattrs.errors import (
+    BaseValidationError,
+    ClassValidationError,
+    ForbiddenExtraKeysError,
+    IterableValidationError,
+    StructureHandlerNotFoundError,
+)
 
-__all__ = ["StructureHandlerNotFoundError"]
+__all__ = [
+    "BaseValidationError",
+    "ClassValidationError",
+    "ForbiddenExtraKeysError",
+    "IterableValidationError",
+    "StructureHandlerNotFoundError",
+]
diff --git a/src/cattrs/__init__.py b/src/cattrs/__init__.py
index c4bd080a..ae3a1c4d 100644
--- a/src/cattrs/__init__.py
+++ b/src/cattrs/__init__.py
@@ -1,25 +1,38 @@
 from .converters import BaseConverter, Converter, GenConverter, UnstructureStrategy
+from .errors import (
+    BaseValidationError,
+    ClassValidationError,
+    ForbiddenExtraKeysError,
+    IterableValidationError,
+    StructureHandlerNotFoundError,
+)
+
 from .gen import override
 
 __all__ = (
     "BaseConverter",
+    "BaseValidationError",
+    "ClassValidationError",
     "Converter",
     "converters",
     "disambiguators",
     "dispatch",
     "errors",
+    "ForbiddenExtraKeysError",
     "gen",
     "GenConverter",
     "global_converter",
+    "IterableValidationError",
     "override",
     "preconf",
-    "register_structure_hook_func",
     "register_structure_hook",
-    "register_unstructure_hook_func",
+    "register_structure_hook_func",
     "register_unstructure_hook",
+    "register_unstructure_hook_func",
+    "structure",
     "structure_attrs_fromdict",
     "structure_attrs_fromtuple",
-    "structure",
+    "StructureHandlerNotFoundError",
     "unstructure",
     "UnstructureStrategy",
 )