diff --git a/dvc/fs/base.py b/dvc/fs/base.py
index c54bfc14b..4ab79a3fd 100644
--- a/dvc/fs/base.py
+++ b/dvc/fs/base.py
@@ -36,7 +36,7 @@ class RemoteMissingDepsError(DvcException):
     pass
 
 
-class BaseFileSystem:
+class FileSystem:
     sep = "/"
 
     scheme = "base"
diff --git a/dvc/fs/dvc.py b/dvc/fs/dvc.py
index c6dddc348..6322c45fd 100644
--- a/dvc/fs/dvc.py
+++ b/dvc/fs/dvc.py
@@ -7,7 +7,7 @@ from dvc.utils import relpath
 
 from ..progress import DEFAULT_CALLBACK
 from ._metadata import Metadata
-from .base import BaseFileSystem
+from .base import FileSystem
 
 if typing.TYPE_CHECKING:
     from dvc.output import Output
@@ -16,7 +16,7 @@ if typing.TYPE_CHECKING:
 logger = logging.getLogger(__name__)
 
 
-class DvcFileSystem(BaseFileSystem):  # pylint:disable=abstract-method
+class DvcFileSystem(FileSystem):  # pylint:disable=abstract-method
     """DVC repo fs.
 
     Args:
diff --git a/dvc/fs/fsspec_wrapper.py b/dvc/fs/fsspec_wrapper.py
index ab6bfa28f..33b5969e7 100644
--- a/dvc/fs/fsspec_wrapper.py
+++ b/dvc/fs/fsspec_wrapper.py
@@ -7,7 +7,7 @@ from tqdm.utils import CallbackIOWrapper
 
 from dvc.progress import DEFAULT_CALLBACK
 
-from .base import BaseFileSystem
+from .base import FileSystem
 
 FSPath = str
 AnyFSPath = str
@@ -22,7 +22,7 @@ Entry = Dict[str, Any]
 
 
 # pylint: disable=no-member
-class FSSpecWrapper(BaseFileSystem):
+class FSSpecWrapper(FileSystem):
     TRAVERSE_PREFIX_LEN = 2
 
     def __init__(self, **kwargs):
diff --git a/dvc/fs/git.py b/dvc/fs/git.py
index a48e2dfde..4feefba78 100644
--- a/dvc/fs/git.py
+++ b/dvc/fs/git.py
@@ -6,10 +6,10 @@ from tqdm.utils import CallbackIOWrapper
 from dvc.utils import is_exec, relpath
 
 from ..progress import DEFAULT_CALLBACK
-from .base import BaseFileSystem
+from .base import FileSystem
 
 
-class GitFileSystem(BaseFileSystem):  # pylint:disable=abstract-method
+class GitFileSystem(FileSystem):  # pylint:disable=abstract-method
     """Proxies the repo file access methods to Git objects"""
 
     sep = os.sep
diff --git a/dvc/fs/local.py b/dvc/fs/local.py
index 51bdfc0b5..1ddb876e0 100644
--- a/dvc/fs/local.py
+++ b/dvc/fs/local.py
@@ -7,12 +7,12 @@ from dvc.utils import is_exec, tmp_fname
 from dvc.utils.fs import copy_fobj_to_file, copyfile, makedirs, move, remove
 
 from ..progress import DEFAULT_CALLBACK
-from .base import BaseFileSystem
+from .base import FileSystem
 
 logger = logging.getLogger(__name__)
 
 
-class LocalFileSystem(BaseFileSystem):
+class LocalFileSystem(FileSystem):
     sep = os.sep
 
     scheme = Schemes.LOCAL
diff --git a/dvc/fs/repo.py b/dvc/fs/repo.py
index 46a830290..a3781340e 100644
--- a/dvc/fs/repo.py
+++ b/dvc/fs/repo.py
@@ -8,7 +8,7 @@ from typing import TYPE_CHECKING, Callable, Optional, Tuple, Type, Union
 from funcy import lfilter, wrap_with
 
 from ..progress import DEFAULT_CALLBACK
-from .base import BaseFileSystem
+from .base import FileSystem
 from .dvc import DvcFileSystem
 
 if TYPE_CHECKING:
@@ -19,7 +19,7 @@ logger = logging.getLogger(__name__)
 RepoFactory = Union[Callable[[str], "Repo"], Type["Repo"]]
 
 
-class RepoFileSystem(BaseFileSystem):  # pylint:disable=abstract-method
+class RepoFileSystem(FileSystem):  # pylint:disable=abstract-method
     """DVC + git-tracked files fs.
 
     Args:
@@ -193,9 +193,7 @@ class RepoFileSystem(BaseFileSystem):  # pylint:disable=abstract-method
         repo_path = os.path.join(dir_path, Repo.DVC_DIR)
         return self._main_repo.fs.isdir(repo_path)
 
-    def _get_fs_pair(
-        self, path
-    ) -> Tuple[BaseFileSystem, Optional[DvcFileSystem]]:
+    def _get_fs_pair(self, path) -> Tuple[FileSystem, Optional[DvcFileSystem]]:
         """
         Returns a pair of fss based on repo the path falls in, using prefix.
         """
diff --git a/dvc/fs/utils.py b/dvc/fs/utils.py
index d408b8380..301a648d4 100644
--- a/dvc/fs/utils.py
+++ b/dvc/fs/utils.py
@@ -7,7 +7,7 @@ from .base import RemoteActionNotImplemented
 from .local import LocalFileSystem
 
 if TYPE_CHECKING:
-    from .base import BaseFileSystem
+    from .base import FileSystem
     from .types import AnyPath
 
 logger = logging.getLogger(__name__)
@@ -15,9 +15,9 @@ logger = logging.getLogger(__name__)
 
 def _link(
     link: "AnyPath",
-    from_fs: "BaseFileSystem",
+    from_fs: "FileSystem",
     from_path: "AnyPath",
-    to_fs: "BaseFileSystem",
+    to_fs: "FileSystem",
     to_path: "AnyPath",
 ) -> None:
     if not isinstance(from_fs, type(to_fs)):
@@ -35,9 +35,9 @@ def _link(
 
 
 def _copy(
-    from_fs: "BaseFileSystem",
+    from_fs: "FileSystem",
     from_path: "AnyPath",
-    to_fs: "BaseFileSystem",
+    to_fs: "FileSystem",
     to_path: "AnyPath",
 ) -> None:
     if isinstance(from_fs, LocalFileSystem):
@@ -53,9 +53,9 @@ def _copy(
 
 def _try_links(
     links: List["AnyPath"],
-    from_fs: "BaseFileSystem",
+    from_fs: "FileSystem",
     from_path: "AnyPath",
-    to_fs: "BaseFileSystem",
+    to_fs: "FileSystem",
     to_path: "AnyPath",
 ) -> None:
     error = None
@@ -80,9 +80,9 @@ def _try_links(
 
 
 def transfer(
-    from_fs: "BaseFileSystem",
+    from_fs: "FileSystem",
     from_path: "AnyPath",
-    to_fs: "BaseFileSystem",
+    to_fs: "FileSystem",
     to_path: "AnyPath",
     hardlink: bool = False,
     links: Optional[List["AnyPath"]] = None,
@@ -115,9 +115,9 @@ def transfer(
 
 def _test_link(
     link: "AnyPath",
-    from_fs: "BaseFileSystem",
+    from_fs: "FileSystem",
     from_file: "AnyPath",
-    to_fs: "BaseFileSystem",
+    to_fs: "FileSystem",
     to_file: "AnyPath",
 ) -> bool:
     try:
@@ -137,9 +137,9 @@ def _test_link(
 
 def test_links(
     links: List["AnyPath"],
-    from_fs: "BaseFileSystem",
+    from_fs: "FileSystem",
     from_path: "AnyPath",
-    to_fs: "BaseFileSystem",
+    to_fs: "FileSystem",
     to_path: "AnyPath",
 ) -> List["AnyPath"]:
     from dvc.utils import tmp_fname
diff --git a/dvc/ignore.py b/dvc/ignore.py
index a52e8767d..3eadb0cf4 100644
--- a/dvc/ignore.py
+++ b/dvc/ignore.py
@@ -7,7 +7,7 @@ from itertools import groupby, takewhile
 from pathspec.patterns import GitWildMatchPattern
 from pathspec.util import normalize_file
 
-from dvc.fs.base import BaseFileSystem
+from dvc.fs.base import FileSystem
 from dvc.fs.local import localfs
 from dvc.pathspec_math import PatternInfo, merge_patterns
 from dvc.scheme import Schemes
@@ -267,7 +267,7 @@ class DvcIgnoreFilter:
             dirs, files = ignore_pattern(abs_root, dirs, files)
         return dirs, files
 
-    def walk(self, fs: BaseFileSystem, path: AnyPath, **kwargs):
+    def walk(self, fs: FileSystem, path: AnyPath, **kwargs):
         ignore_subrepos = kwargs.pop("ignore_subrepos", True)
         if fs.scheme == Schemes.LOCAL:
             for root, dirs, files in fs.walk(path, **kwargs):
@@ -278,7 +278,7 @@ class DvcIgnoreFilter:
         else:
             yield from fs.walk(path, **kwargs)
 
-    def find(self, fs: BaseFileSystem, path: AnyPath, **kwargs):
+    def find(self, fs: FileSystem, path: AnyPath, **kwargs):
         if fs.scheme == Schemes.LOCAL:
             for root, _, files in self.walk(fs, path, **kwargs):
                 for file in files:
@@ -371,7 +371,7 @@ class DvcIgnoreFilter:
         return _no_match(target)
 
     def is_ignored(
-        self, fs: BaseFileSystem, path: str, ignore_subrepos: bool = True
+        self, fs: FileSystem, path: str, ignore_subrepos: bool = True
     ) -> bool:
         # NOTE: can't use self.check_ignore(path).match for now, see
         # https://github.com/iterative/dvc/issues/4555
diff --git a/dvc/objects/db/base.py b/dvc/objects/db/base.py
index 7abcb28dd..1ff68c268 100644
--- a/dvc/objects/db/base.py
+++ b/dvc/objects/db/base.py
@@ -10,7 +10,7 @@ from dvc.objects.file import HashFile
 from dvc.progress import Tqdm
 
 if TYPE_CHECKING:
-    from dvc.fs.base import BaseFileSystem
+    from dvc.fs.base import FileSystem
     from dvc.hash_info import HashInfo
     from dvc.types import AnyPath
 
@@ -23,7 +23,7 @@ class ObjectDB:
     DEFAULT_CACHE_TYPES = ["copy"]
     CACHE_MODE: Optional[int] = None
 
-    def __init__(self, fs: "BaseFileSystem", path: str, **config):
+    def __init__(self, fs: "FileSystem", path: str, **config):
         from dvc.state import StateNoop
 
         self.fs = fs
@@ -75,7 +75,7 @@ class ObjectDB:
 
     def _add_file(
         self,
-        from_fs: "BaseFileSystem",
+        from_fs: "FileSystem",
         from_info: "AnyPath",
         to_info: "AnyPath",
         _hash_info: "HashInfo",
@@ -95,7 +95,7 @@ class ObjectDB:
     def add(
         self,
         fs_path: "AnyPath",
-        fs: "BaseFileSystem",
+        fs: "FileSystem",
         hash_info: "HashInfo",
         hardlink: bool = False,
         verify: Optional[bool] = None,
diff --git a/dvc/objects/db/reference.py b/dvc/objects/db/reference.py
index 62ff22711..517c46c76 100644
--- a/dvc/objects/db/reference.py
+++ b/dvc/objects/db/reference.py
@@ -10,7 +10,7 @@ from ..reference import ReferenceHashFile
 from .base import ObjectDB
 
 if TYPE_CHECKING:
-    from dvc.fs.base import BaseFileSystem
+    from dvc.fs.base import FileSystem
     from dvc.hash_info import HashInfo
     from dvc.types import AnyPath
 
@@ -26,7 +26,7 @@ class ReferenceObjectDB(ObjectDB):
 
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
-        self._fs_cache: Dict[tuple, "BaseFileSystem"] = {}
+        self._fs_cache: Dict[tuple, "FileSystem"] = {}
         self._obj_cache: Dict["HashInfo", "ReferenceHashFile"] = {}
 
     def get(self, hash_info: "HashInfo"):
@@ -54,7 +54,7 @@ class ReferenceObjectDB(ObjectDB):
 
     def _add_file(
         self,
-        from_fs: "BaseFileSystem",
+        from_fs: "FileSystem",
         from_info: "AnyPath",
         to_info: "AnyPath",
         hash_info: "HashInfo",
diff --git a/dvc/objects/file.py b/dvc/objects/file.py
index a17699520..b4435ba37 100644
--- a/dvc/objects/file.py
+++ b/dvc/objects/file.py
@@ -6,7 +6,7 @@ from typing import TYPE_CHECKING, Optional
 from .errors import ObjectFormatError
 
 if TYPE_CHECKING:
-    from dvc.fs.base import BaseFileSystem
+    from dvc.fs.base import FileSystem
     from dvc.hash_info import HashInfo
     from dvc.types import AnyPath
 
@@ -19,7 +19,7 @@ class HashFile:
     def __init__(
         self,
         fs_path: Optional["AnyPath"],
-        fs: Optional["BaseFileSystem"],
+        fs: Optional["FileSystem"],
         hash_info: "HashInfo",
         name: Optional[str] = None,
     ):
diff --git a/dvc/objects/reference.py b/dvc/objects/reference.py
index 93a9eb0db..7fe7c414d 100644
--- a/dvc/objects/reference.py
+++ b/dvc/objects/reference.py
@@ -8,7 +8,7 @@ from .errors import ObjectFormatError
 from .file import HashFile
 
 if TYPE_CHECKING:
-    from dvc.fs.base import BaseFileSystem
+    from dvc.fs.base import FileSystem
     from dvc.hash_info import HashInfo
     from dvc.types import AnyPath
 
@@ -26,7 +26,7 @@ class ReferenceHashFile(HashFile):
     def __init__(
         self,
         fs_path: "AnyPath",
-        fs: "BaseFileSystem",
+        fs: "FileSystem",
         hash_info: "HashInfo",
         checksum: Optional[str] = None,
         **kwargs,
@@ -109,7 +109,7 @@ class ReferenceHashFile(HashFile):
         )
 
     @staticmethod
-    def config_tuple(fs: "BaseFileSystem"):
+    def config_tuple(fs: "FileSystem"):
         return (
             fs.scheme,
             tuple(
diff --git a/dvc/objects/stage.py b/dvc/objects/stage.py
index b63c87a98..d487af53d 100644
--- a/dvc/objects/stage.py
+++ b/dvc/objects/stage.py
@@ -16,7 +16,7 @@ from .file import HashFile
 from .meta import Meta
 
 if TYPE_CHECKING:
-    from dvc.fs.base import BaseFileSystem
+    from dvc.fs.base import FileSystem
     from dvc.types import AnyPath
 
     from .db.base import ObjectDB
@@ -210,7 +210,7 @@ _url_cache: Dict[str, str] = {}
 
 
 def _make_staging_url(
-    fs: "BaseFileSystem", odb: "ObjectDB", fs_path: Optional[str]
+    fs: "FileSystem", odb: "ObjectDB", fs_path: Optional[str]
 ):
     from dvc.scheme import Schemes
 
@@ -288,7 +288,7 @@ def _stage_external_tree_info(odb, tree, name):
 def stage(
     odb: "ObjectDB",
     fs_path: "AnyPath",
-    fs: "BaseFileSystem",
+    fs: "FileSystem",
     name: str,
     upload: bool = False,
     dry_run: bool = False,
diff --git a/dvc/repo/__init__.py b/dvc/repo/__init__.py
index 22e459818..bbda875e5 100644
--- a/dvc/repo/__init__.py
+++ b/dvc/repo/__init__.py
@@ -15,7 +15,7 @@ from dvc.utils import env2bool
 from dvc.utils.fs import path_isin
 
 if TYPE_CHECKING:
-    from dvc.fs.base import BaseFileSystem
+    from dvc.fs.base import FileSystem
     from dvc.objects.file import HashFile
     from dvc.repo.scm_context import SCMContext
     from dvc.scm import Base
@@ -307,11 +307,11 @@ class Repo:
         return None
 
     @property
-    def fs(self) -> "BaseFileSystem":
+    def fs(self) -> "FileSystem":
         return self._fs
 
     @fs.setter
-    def fs(self, fs: "BaseFileSystem"):
+    def fs(self, fs: "FileSystem"):
         self._fs = fs
         # Our graph cache is no longer valid, as it was based on the previous
         # fs.
diff --git a/dvc/repo/index.py b/dvc/repo/index.py
index 8989f78ec..a3f789c37 100644
--- a/dvc/repo/index.py
+++ b/dvc/repo/index.py
@@ -20,7 +20,7 @@ if TYPE_CHECKING:
     from pygtrie import Trie
 
     from dvc.dependency import Dependency, ParamsDependency
-    from dvc.fs.base import BaseFileSystem
+    from dvc.fs.base import FileSystem
     from dvc.objects import HashInfo, ObjectDB
     from dvc.output import Output
     from dvc.repo.stage import StageLoad
@@ -35,7 +35,7 @@ class Index:
     def __init__(
         self,
         repo: "Repo",  # pylint: disable=redefined-outer-name
-        fs: "BaseFileSystem" = None,
+        fs: "FileSystem" = None,
         stages: List["Stage"] = None,
     ) -> None:
         """Index is an immutable collection of stages.
@@ -58,7 +58,7 @@ class Index:
         """
 
         self.repo: "Repo" = repo
-        self.fs: "BaseFileSystem" = fs or repo.fs
+        self.fs: "FileSystem" = fs or repo.fs
         self.stage_collector: "StageLoad" = repo.stage
         if stages is not None:
             self.stages: List["Stage"] = stages
diff --git a/dvc/utils/serialize/_common.py b/dvc/utils/serialize/_common.py
index 0ef6ec864..8914dacf4 100644
--- a/dvc/utils/serialize/_common.py
+++ b/dvc/utils/serialize/_common.py
@@ -9,26 +9,26 @@ from typing_extensions import Protocol
 from dvc.exceptions import DvcException
 
 if TYPE_CHECKING:
-    from dvc.fs.base import BaseFileSystem
+    from dvc.fs.base import FileSystem
     from dvc.types import AnyPath
 
 
 class DumperFn(Protocol):
     def __call__(
-        self, path: "AnyPath", data: Any, fs: "BaseFileSystem" = None
+        self, path: "AnyPath", data: Any, fs: "FileSystem" = None
     ) -> Any:
         ...
 
 
 class ModifierFn(Protocol):
     def __call__(
-        self, path: "AnyPath", fs: "BaseFileSystem" = None
+        self, path: "AnyPath", fs: "FileSystem" = None
     ) -> ContextManager[Dict]:
         ...
 
 
 class LoaderFn(Protocol):
-    def __call__(self, path: "AnyPath", fs: "BaseFileSystem" = None) -> Any:
+    def __call__(self, path: "AnyPath", fs: "FileSystem" = None) -> Any:
         ...
 
 
@@ -55,7 +55,7 @@ class EncodingError(ParseError):
         super().__init__(path, f"is not valid {encoding}")
 
 
-def _load_data(path: "AnyPath", parser: ParserFn, fs: "BaseFileSystem" = None):
+def _load_data(path: "AnyPath", parser: ParserFn, fs: "FileSystem" = None):
     open_fn = fs.open if fs else open
     encoding = "utf-8"
     with open_fn(path, encoding=encoding) as fd:  # type: ignore
@@ -67,7 +67,7 @@ def _dump_data(
     path,
     data: Any,
     dumper: DumperFn,
-    fs: "BaseFileSystem" = None,
+    fs: "FileSystem" = None,
     **dumper_args,
 ):
     open_fn = fs.open if fs else open
@@ -80,7 +80,7 @@ def _modify_data(
     path: "AnyPath",
     parser: ParserFn,
     dumper: DumperFn,
-    fs: "BaseFileSystem" = None,
+    fs: "FileSystem" = None,
 ):
     exists_fn = fs.exists if fs else os.path.exists
     file_exists = exists_fn(path)  # type: ignore
diff --git a/dvc/utils/strictyaml.py b/dvc/utils/strictyaml.py
index 582949d58..ee4ba95a4 100644
--- a/dvc/utils/strictyaml.py
+++ b/dvc/utils/strictyaml.py
@@ -25,7 +25,7 @@ if TYPE_CHECKING:
     from ruamel.yaml import StreamMark
     from voluptuous import MultipleInvalid
 
-    from dvc.fs.base import BaseFileSystem
+    from dvc.fs.base import FileSystem
     from dvc.ui import RichText
 
 
@@ -266,7 +266,7 @@ def validate(
 def load(
     path: str,
     schema: Callable[[_T], _T] = None,
-    fs: "BaseFileSystem" = None,
+    fs: "FileSystem" = None,
     encoding: str = "utf-8",
     round_trip: bool = False,
 ) -> Any:
diff --git a/tests/unit/fs/test_base.py b/tests/unit/fs/test_base.py
index 42016b32b..8d35654bf 100644
--- a/tests/unit/fs/test_base.py
+++ b/tests/unit/fs/test_base.py
@@ -1,6 +1,6 @@
 import pytest
 
-from dvc.fs.base import BaseFileSystem, RemoteMissingDepsError
+from dvc.fs.base import FileSystem, RemoteMissingDepsError
 
 
 @pytest.mark.parametrize(
@@ -13,7 +13,7 @@ from dvc.fs.base import BaseFileSystem, RemoteMissingDepsError
 )
 def test_missing_deps(pkg, msg, mocker):
     requires = {"missing": "missing"}
-    mocker.patch.object(BaseFileSystem, "REQUIRES", requires)
+    mocker.patch.object(FileSystem, "REQUIRES", requires)
     mocker.patch("dvc.utils.pkg.PKG", pkg)
     with pytest.raises(RemoteMissingDepsError, match=msg):
-        BaseFileSystem()
+        FileSystem()
diff --git a/tests/unit/remote/test_base.py b/tests/unit/remote/test_base.py
index fca93bd54..686a191e3 100644
--- a/tests/unit/remote/test_base.py
+++ b/tests/unit/remote/test_base.py
@@ -4,7 +4,7 @@ from unittest import mock
 
 import pytest
 
-from dvc.fs.base import BaseFileSystem, RemoteCmdError
+from dvc.fs.base import FileSystem, RemoteCmdError
 from dvc.objects.db.base import ObjectDB
 
 
@@ -26,18 +26,18 @@ def test_cmd_error(dvc):
     err = "sed: expression #1, char 2: extra characters after command"
 
     with mock.patch.object(
-        BaseFileSystem,
+        FileSystem,
         "remove",
         side_effect=RemoteCmdError("base", cmd, ret, err),
     ):
         with pytest.raises(RemoteCmdError):
-            BaseFileSystem(**config).remove("file")
+            FileSystem(**config).remove("file")
 
 
 @mock.patch.object(ObjectDB, "list_hashes_traverse")
 @mock.patch.object(ObjectDB, "list_hashes_exists")
 def test_hashes_exist(object_exists, traverse, dvc):
-    odb = ObjectDB(BaseFileSystem(), None)
+    odb = ObjectDB(FileSystem(), None)
 
     # remote does not support traverse
     odb.fs.CAN_TRAVERSE = False
@@ -86,7 +86,7 @@ def test_hashes_exist(object_exists, traverse, dvc):
 @mock.patch.object(ObjectDB, "list_hashes", return_value=[])
 @mock.patch.object(ObjectDB, "_path_to_hash", side_effect=lambda x: x)
 def test_list_hashes_traverse(_path_to_hash, list_hashes, dvc):
-    odb = ObjectDB(BaseFileSystem(), None)
+    odb = ObjectDB(FileSystem(), None)
     odb.fs_path = "foo"
 
     # parallel traverse
@@ -111,7 +111,7 @@ def test_list_hashes_traverse(_path_to_hash, list_hashes, dvc):
 
 
 def test_list_hashes(dvc):
-    odb = ObjectDB(BaseFileSystem(), None)
+    odb = ObjectDB(FileSystem(), None)
     odb.fs_path = "foo"
 
     with mock.patch.object(
@@ -123,7 +123,7 @@ def test_list_hashes(dvc):
 
 def test_list_paths(dvc):
     path = "foo"
-    odb = ObjectDB(BaseFileSystem(), path)
+    odb = ObjectDB(FileSystem(), path)
 
     with mock.patch.object(odb.fs, "find", return_value=[]) as walk_mock:
         for _ in odb._list_paths():
@@ -142,4 +142,4 @@ def test_list_paths(dvc):
     [(None, False), ("", False), ("3456.dir", True), ("3456", False)],
 )
 def test_is_dir_hash(hash_, result):
-    assert BaseFileSystem.is_dir_hash(hash_) == result
+    assert FileSystem.is_dir_hash(hash_) == result