diff --git a/pytorch_lightning/core/datamodule.py b/pytorch_lightning/core/datamodule.py
index b1f42c6ea4..297f939542 100644
--- a/pytorch_lightning/core/datamodule.py
+++ b/pytorch_lightning/core/datamodule.py
@@ -20,9 +20,9 @@ from typing import Any, List, Mapping, Optional, Sequence, Tuple, Union
 from torch.utils.data import DataLoader, Dataset, IterableDataset
 
 from pytorch_lightning.core.hooks import CheckpointHooks, DataHooks
+from pytorch_lightning.core.mixins import HyperparametersMixin
 from pytorch_lightning.utilities import rank_zero_deprecation
 from pytorch_lightning.utilities.argparse import add_argparse_args, from_argparse_args, get_init_arguments_and_types
-from pytorch_lightning.utilities.hparams_mixin import HyperparametersMixin
 
 
 class LightningDataModule(CheckpointHooks, DataHooks, HyperparametersMixin):
diff --git a/pytorch_lightning/core/lightning.py b/pytorch_lightning/core/lightning.py
index 6a68fb8011..90a9681906 100644
--- a/pytorch_lightning/core/lightning.py
+++ b/pytorch_lightning/core/lightning.py
@@ -34,16 +34,15 @@ from torchmetrics import Metric
 from pytorch_lightning.core.grads import GradInformation
 from pytorch_lightning.core.hooks import CheckpointHooks, DataHooks, ModelHooks
 from pytorch_lightning.core.memory import ModelSummary
+from pytorch_lightning.core.mixins import DeviceDtypeModuleMixin, HyperparametersMixin
 from pytorch_lightning.core.optimizer import LightningOptimizer
 from pytorch_lightning.core.saving import ModelIO
 from pytorch_lightning.trainer.connectors.logger_connector.fx_validator import FxValidator
 from pytorch_lightning.utilities import rank_zero_deprecation, rank_zero_warn
 from pytorch_lightning.utilities.apply_func import apply_to_collection, convert_to_tensors
 from pytorch_lightning.utilities.cloud_io import get_filesystem
-from pytorch_lightning.utilities.device_dtype_mixin import DeviceDtypeModuleMixin
 from pytorch_lightning.utilities.distributed import distributed_available, sync_ddp
 from pytorch_lightning.utilities.exceptions import MisconfigurationException
-from pytorch_lightning.utilities.hparams_mixin import HyperparametersMixin
 from pytorch_lightning.utilities.parsing import collect_init_args
 from pytorch_lightning.utilities.signature_utils import is_param_in_hook_signature
 from pytorch_lightning.utilities.types import _METRIC_COLLECTION, EPOCH_OUTPUT, STEP_OUTPUT
diff --git a/pytorch_lightning/core/mixins/__init__.py b/pytorch_lightning/core/mixins/__init__.py
new file mode 100644
index 0000000000..c38db6aa4c
--- /dev/null
+++ b/pytorch_lightning/core/mixins/__init__.py
@@ -0,0 +1,16 @@
+# Copyright The PyTorch Lightning team.
+#
+# 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.
+
+from pytorch_lightning.core.mixins.device_dtype_mixin import DeviceDtypeModuleMixin  # noqa F401
+from pytorch_lightning.core.mixins.hparams_mixin import HyperparametersMixin  # noqa F401
diff --git a/pytorch_lightning/utilities/device_dtype_mixin.py b/pytorch_lightning/core/mixins/device_dtype_mixin.py
similarity index 100%
rename from pytorch_lightning/utilities/device_dtype_mixin.py
rename to pytorch_lightning/core/mixins/device_dtype_mixin.py
diff --git a/pytorch_lightning/utilities/hparams_mixin.py b/pytorch_lightning/core/mixins/hparams_mixin.py
similarity index 100%
rename from pytorch_lightning/utilities/hparams_mixin.py
rename to pytorch_lightning/core/mixins/hparams_mixin.py
diff --git a/pytorch_lightning/overrides/base.py b/pytorch_lightning/overrides/base.py
index 3f396c3d60..2d705c0b14 100644
--- a/pytorch_lightning/overrides/base.py
+++ b/pytorch_lightning/overrides/base.py
@@ -18,7 +18,7 @@ from torch.nn import DataParallel
 from torch.nn.parallel import DistributedDataParallel
 
 import pytorch_lightning as pl
-from pytorch_lightning.utilities.device_dtype_mixin import DeviceDtypeModuleMixin
+from pytorch_lightning.core.mixins import DeviceDtypeModuleMixin
 
 
 class _LightningPrecisionModuleWrapperBase(DeviceDtypeModuleMixin, torch.nn.Module):
diff --git a/pytorch_lightning/trainer/connectors/logger_connector/result.py b/pytorch_lightning/trainer/connectors/logger_connector/result.py
index dff3754cc4..ae0989010a 100644
--- a/pytorch_lightning/trainer/connectors/logger_connector/result.py
+++ b/pytorch_lightning/trainer/connectors/logger_connector/result.py
@@ -19,10 +19,10 @@ from typing import Any, Callable, Dict, List, Mapping, Optional, Tuple, Union
 import torch
 from torchmetrics import Metric
 
+from pytorch_lightning.core.mixins import DeviceDtypeModuleMixin
 from pytorch_lightning.utilities import rank_zero_warn
 from pytorch_lightning.utilities.apply_func import apply_to_collection, apply_to_collections
 from pytorch_lightning.utilities.data import extract_batch_size
-from pytorch_lightning.utilities.device_dtype_mixin import DeviceDtypeModuleMixin
 from pytorch_lightning.utilities.distributed import distributed_available
 from pytorch_lightning.utilities.enums import LightningEnum
 from pytorch_lightning.utilities.exceptions import MisconfigurationException
diff --git a/tests/utilities/test_dtype_device_mixin.py b/tests/utilities/test_dtype_device_mixin.py
index 737f874d8d..287a402bc4 100644
--- a/tests/utilities/test_dtype_device_mixin.py
+++ b/tests/utilities/test_dtype_device_mixin.py
@@ -16,7 +16,7 @@ import torch
 import torch.nn as nn
 
 from pytorch_lightning import Callback, Trainer
-from pytorch_lightning.utilities.device_dtype_mixin import DeviceDtypeModuleMixin
+from pytorch_lightning.core.mixins import DeviceDtypeModuleMixin
 from tests.helpers import BoringModel
 from tests.helpers.runif import RunIf