diff --git a/pyproject.toml b/pyproject.toml
index 9aeb4b7c9..5270db0ba 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -43,6 +43,7 @@ dependencies = [
 llfuse = ["llfuse >= 1.3.8"]
 pyfuse3 = ["pyfuse3 >= 3.1.1"]
 nofuse = []
+s3 = ["borgstore[s3] ~= 0.3.0"]
 
 [project.urls]
 "Homepage" = "https://borgbackup.org/"
diff --git a/src/borg/archiver/_common.py b/src/borg/archiver/_common.py
index 7900d5f1c..8e9d95a69 100644
--- a/src/borg/archiver/_common.py
+++ b/src/borg/archiver/_common.py
@@ -37,7 +37,9 @@ def get_repository(location, *, create, exclusive, lock_wait, lock, args, v1_or_
             location, create=create, exclusive=exclusive, lock_wait=lock_wait, lock=lock, args=args
         )
 
-    elif location.proto in ("sftp", "file", "rclone") and not v1_or_v2:  # stuff directly supported by borgstore
+    elif (
+        location.proto in ("sftp", "file", "rclone", "s3", "b2") and not v1_or_v2
+    ):  # stuff directly supported by borgstore
         repository = Repository(location, create=create, exclusive=exclusive, lock_wait=lock_wait, lock=lock)
 
     else:
diff --git a/src/borg/helpers/parseformat.py b/src/borg/helpers/parseformat.py
index 8f9385e27..61f52a4b0 100644
--- a/src/borg/helpers/parseformat.py
+++ b/src/borg/helpers/parseformat.py
@@ -472,6 +472,27 @@ class Location:
         re.VERBOSE,
     )
 
+    # (s3|b2):[profile|(access_key_id:access_key_secret)@][schema://hostname[:port]]/bucket/path
+    s3_re = re.compile(
+        r"""
+        (?P<s3type>(s3|b2)):
+        ((
+            (?P<profile>[^@:]+)  # profile (no colons allowed)
+            |
+            (?P<access_key_id>[^:@]+):(?P<access_key_secret>[^@]+)  # access key and secret
+        )@)?  # optional authentication
+        (
+            [^:/]+://  # scheme
+            (?P<hostname>[^:/]+)
+            (:(?P<port>\d+))?
+        )?  # optional endpoint
+        /
+        (?P<bucket>[^/]+)/  # bucket name
+        (?P<path>.+)  # path
+    """,
+        re.VERBOSE,
+    )
+
     rclone_re = re.compile(r"(?P<proto>rclone):(?P<path>(.*))", re.VERBOSE)
 
     file_or_socket_re = re.compile(r"(?P<proto>(file|socket))://" + abs_path_re, re.VERBOSE)
@@ -483,6 +504,7 @@ class Location:
         self.valid = False
         self.proto = None
         self.user = None
+        self._pass = None
         self._host = None
         self.port = None
         self.path = None
@@ -524,6 +546,15 @@ class Location:
             self.proto = m.group("proto")
             self.path = os.path.normpath(m.group("path"))
             return True
+        m = self.s3_re.match(text)
+        if m:
+            self.proto = m.group("s3type")
+            self.user = m.group("profile") if m.group("profile") else m.group("access_key_id")
+            self._pass = True if m.group("access_key_secret") else False
+            self._host = m.group("hostname")
+            self.port = m.group("port") and int(m.group("port")) or None
+            self.path = m.group("bucket") + "/" + m.group("path")
+            return True
         m = self.local_re.match(text)
         if m:
             self.proto = "file"
@@ -535,6 +566,7 @@ class Location:
         items = [
             "proto=%r" % self.proto,
             "user=%r" % self.user,
+            "pass=%r" % ("REDACTED" if self._pass else None),
             "host=%r" % self.host,
             "port=%r" % self.port,
             "path=%r" % self.path,
@@ -566,7 +598,7 @@ class Location:
             return self.path
         if self.proto == "rclone":
             return f"{self.proto}:{self.path}"
-        if self.proto in ("sftp", "ssh"):
+        if self.proto in ("sftp", "ssh", "s3", "b2"):
             return (
                 f"{self.proto}://"
                 f"{(self.user + '@') if self.user else ''}"
diff --git a/src/borg/testsuite/helpers/parseformat_test.py b/src/borg/testsuite/helpers/parseformat_test.py
index ef39e6714..61a710cea 100644
--- a/src/borg/testsuite/helpers/parseformat_test.py
+++ b/src/borg/testsuite/helpers/parseformat_test.py
@@ -86,30 +86,30 @@ class TestLocationWithoutEnv:
         monkeypatch.delenv("BORG_REPO", raising=False)
         assert (
             repr(Location("ssh://user@host:1234//absolute/path"))
-            == "Location(proto='ssh', user='user', host='host', port=1234, path='/absolute/path')"
+            == "Location(proto='ssh', user='user', pass=None, host='host', port=1234, path='/absolute/path')"
         )
         assert Location("ssh://user@host:1234//absolute/path").to_key_filename() == keys_dir + "host___absolute_path"
         assert (
             repr(Location("ssh://user@host:1234/relative/path"))
-            == "Location(proto='ssh', user='user', host='host', port=1234, path='relative/path')"
+            == "Location(proto='ssh', user='user', pass=None, host='host', port=1234, path='relative/path')"
         )
         assert Location("ssh://user@host:1234/relative/path").to_key_filename() == keys_dir + "host__relative_path"
         assert (
             repr(Location("ssh://user@host/relative/path"))
-            == "Location(proto='ssh', user='user', host='host', port=None, path='relative/path')"
+            == "Location(proto='ssh', user='user', pass=None, host='host', port=None, path='relative/path')"
         )
         assert (
             repr(Location("ssh://user@[::]:1234/relative/path"))
-            == "Location(proto='ssh', user='user', host='::', port=1234, path='relative/path')"
+            == "Location(proto='ssh', user='user', pass=None, host='::', port=1234, path='relative/path')"
         )
         assert Location("ssh://user@[::]:1234/relative/path").to_key_filename() == keys_dir + "____relative_path"
         assert (
             repr(Location("ssh://user@[::]/relative/path"))
-            == "Location(proto='ssh', user='user', host='::', port=None, path='relative/path')"
+            == "Location(proto='ssh', user='user', pass=None, host='::', port=None, path='relative/path')"
         )
         assert (
             repr(Location("ssh://user@[2001:db8::]:1234/relative/path"))
-            == "Location(proto='ssh', user='user', host='2001:db8::', port=1234, path='relative/path')"
+            == "Location(proto='ssh', user='user', pass=None, host='2001:db8::', port=1234, path='relative/path')"
         )
         assert (
             Location("ssh://user@[2001:db8::]:1234/relative/path").to_key_filename()
@@ -117,23 +117,23 @@ class TestLocationWithoutEnv:
         )
         assert (
             repr(Location("ssh://user@[2001:db8::]/relative/path"))
-            == "Location(proto='ssh', user='user', host='2001:db8::', port=None, path='relative/path')"
+            == "Location(proto='ssh', user='user', pass=None, host='2001:db8::', port=None, path='relative/path')"
         )
         assert (
             repr(Location("ssh://user@[2001:db8::c0:ffee]:1234/relative/path"))
-            == "Location(proto='ssh', user='user', host='2001:db8::c0:ffee', port=1234, path='relative/path')"
+            == "Location(proto='ssh', user='user', pass=None, host='2001:db8::c0:ffee', port=1234, path='relative/path')"  # noqa: E501
         )
         assert (
             repr(Location("ssh://user@[2001:db8::c0:ffee]/relative/path"))
-            == "Location(proto='ssh', user='user', host='2001:db8::c0:ffee', port=None, path='relative/path')"
+            == "Location(proto='ssh', user='user', pass=None, host='2001:db8::c0:ffee', port=None, path='relative/path')"  # noqa: E501
         )
         assert (
             repr(Location("ssh://user@[2001:db8::192.0.2.1]:1234/relative/path"))
-            == "Location(proto='ssh', user='user', host='2001:db8::192.0.2.1', port=1234, path='relative/path')"
+            == "Location(proto='ssh', user='user', pass=None, host='2001:db8::192.0.2.1', port=1234, path='relative/path')"  # noqa: E501
         )
         assert (
             repr(Location("ssh://user@[2001:db8::192.0.2.1]/relative/path"))
-            == "Location(proto='ssh', user='user', host='2001:db8::192.0.2.1', port=None, path='relative/path')"
+            == "Location(proto='ssh', user='user', pass=None, host='2001:db8::192.0.2.1', port=None, path='relative/path')"  # noqa: E501
         )
         assert (
             Location("ssh://user@[2001:db8::192.0.2.1]/relative/path").to_key_filename()
@@ -141,20 +141,39 @@ class TestLocationWithoutEnv:
         )
         assert (
             repr(Location("ssh://user@[2a02:0001:0002:0003:0004:0005:0006:0007]/relative/path"))
-            == "Location(proto='ssh', user='user', "
+            == "Location(proto='ssh', user='user', pass=None, "
             "host='2a02:0001:0002:0003:0004:0005:0006:0007', port=None, path='relative/path')"
         )
         assert (
             repr(Location("ssh://user@[2a02:0001:0002:0003:0004:0005:0006:0007]:1234/relative/path"))
-            == "Location(proto='ssh', user='user', "
+            == "Location(proto='ssh', user='user', pass=None, "
             "host='2a02:0001:0002:0003:0004:0005:0006:0007', port=1234, path='relative/path')"
         )
 
+    def test_s3(self, monkeypatch, keys_dir):
+        monkeypatch.delenv("BORG_REPO", raising=False)
+        assert (
+            repr(Location("s3:/test/path"))
+            == "Location(proto='s3', user=None, pass=None, host=None, port=None, path='test/path')"
+        )
+        assert (
+            repr(Location("s3:profile@http://172.28.52.116:9000/test/path"))
+            == "Location(proto='s3', user='profile', pass=None, host='172.28.52.116', port=9000, path='test/path')"  # noqa: E501
+        )
+        assert (
+            repr(Location("s3:user:pass@http://172.28.52.116:9000/test/path"))
+            == "Location(proto='s3', user='user', pass='REDACTED', host='172.28.52.116', port=9000, path='test/path')"  # noqa: E501
+        )
+        assert (
+            repr(Location("b2:user:pass@https://s3.us-east-005.backblazeb2.com/test/path"))
+            == "Location(proto='b2', user='user', pass='REDACTED', host='s3.us-east-005.backblazeb2.com', port=None, path='test/path')"  # noqa: E501
+        )
+
     def test_rclone(self, monkeypatch, keys_dir):
         monkeypatch.delenv("BORG_REPO", raising=False)
         assert (
             repr(Location("rclone:remote:path"))
-            == "Location(proto='rclone', user=None, host=None, port=None, path='remote:path')"
+            == "Location(proto='rclone', user=None, pass=None, host=None, port=None, path='remote:path')"
         )
         assert Location("rclone:remote:path").to_key_filename() == keys_dir + "remote_path"
 
@@ -163,13 +182,13 @@ class TestLocationWithoutEnv:
         # relative path
         assert (
             repr(Location("sftp://user@host:1234/rel/path"))
-            == "Location(proto='sftp', user='user', host='host', port=1234, path='rel/path')"
+            == "Location(proto='sftp', user='user', pass=None, host='host', port=1234, path='rel/path')"
         )
         assert Location("sftp://user@host:1234/rel/path").to_key_filename() == keys_dir + "host__rel_path"
         # absolute path
         assert (
             repr(Location("sftp://user@host:1234//abs/path"))
-            == "Location(proto='sftp', user='user', host='host', port=1234, path='/abs/path')"
+            == "Location(proto='sftp', user='user', pass=None, host='host', port=1234, path='/abs/path')"
         )
         assert Location("sftp://user@host:1234//abs/path").to_key_filename() == keys_dir + "host___abs_path"
 
@@ -177,7 +196,7 @@ class TestLocationWithoutEnv:
         monkeypatch.delenv("BORG_REPO", raising=False)
         assert (
             repr(Location("socket:///repo/path"))
-            == "Location(proto='socket', user=None, host=None, port=None, path='/repo/path')"
+            == "Location(proto='socket', user=None, pass=None, host=None, port=None, path='/repo/path')"
         )
         assert Location("socket:///some/path").to_key_filename() == keys_dir + "_some_path"
 
@@ -185,11 +204,11 @@ class TestLocationWithoutEnv:
         monkeypatch.delenv("BORG_REPO", raising=False)
         assert (
             repr(Location("file:///some/path"))
-            == "Location(proto='file', user=None, host=None, port=None, path='/some/path')"
+            == "Location(proto='file', user=None, pass=None, host=None, port=None, path='/some/path')"
         )
         assert (
             repr(Location("file:///some/path"))
-            == "Location(proto='file', user=None, host=None, port=None, path='/some/path')"
+            == "Location(proto='file', user=None, pass=None, host=None, port=None, path='/some/path')"
         )
         assert Location("file:///some/path").to_key_filename() == keys_dir + "_some_path"
 
@@ -197,7 +216,7 @@ class TestLocationWithoutEnv:
         monkeypatch.delenv("BORG_REPO", raising=False)
         assert (
             repr(Location("file:////server/share/path"))
-            == "Location(proto='file', user=None, host=None, port=None, path='//server/share/path')"
+            == "Location(proto='file', user=None, pass=None, host=None, port=None, path='//server/share/path')"
         )
         assert Location("file:////server/share/path").to_key_filename() == keys_dir + "__server_share_path"
 
@@ -205,19 +224,22 @@ class TestLocationWithoutEnv:
         monkeypatch.delenv("BORG_REPO", raising=False)
         rel_path = "path"
         abs_path = os.path.abspath(rel_path)
-        assert repr(Location(rel_path)) == f"Location(proto='file', user=None, host=None, port=None, path='{abs_path}')"
+        assert (
+            repr(Location(rel_path))
+            == f"Location(proto='file', user=None, pass=None, host=None, port=None, path='{abs_path}')"
+        )
         assert Location("path").to_key_filename().endswith(rel_path)
 
     def test_abspath(self, monkeypatch, keys_dir):
         monkeypatch.delenv("BORG_REPO", raising=False)
         assert (
             repr(Location("/some/absolute/path"))
-            == "Location(proto='file', user=None, host=None, port=None, path='/some/absolute/path')"
+            == "Location(proto='file', user=None, pass=None, host=None, port=None, path='/some/absolute/path')"
         )
         assert Location("/some/absolute/path").to_key_filename() == keys_dir + "_some_absolute_path"
         assert (
             repr(Location("/some/../absolute/path"))
-            == "Location(proto='file', user=None, host=None, port=None, path='/absolute/path')"
+            == "Location(proto='file', user=None, pass=None, host=None, port=None, path='/absolute/path')"
         )
         assert Location("/some/../absolute/path").to_key_filename() == keys_dir + "_absolute_path"
 
@@ -226,11 +248,14 @@ class TestLocationWithoutEnv:
         # for a local path, borg creates a Location instance with an absolute path
         rel_path = "relative/path"
         abs_path = os.path.abspath(rel_path)
-        assert repr(Location(rel_path)) == f"Location(proto='file', user=None, host=None, port=None, path='{abs_path}')"
+        assert (
+            repr(Location(rel_path))
+            == f"Location(proto='file', user=None, pass=None, host=None, port=None, path='{abs_path}')"
+        )
         assert Location(rel_path).to_key_filename().endswith("relative_path")
         assert (
             repr(Location("ssh://user@host/relative/path"))
-            == "Location(proto='ssh', user='user', host='host', port=None, path='relative/path')"
+            == "Location(proto='ssh', user='user', pass=None, host='host', port=None, path='relative/path')"
         )
         assert Location("ssh://user@host/relative/path").to_key_filename() == keys_dir + "host__relative_path"
 
@@ -238,17 +263,17 @@ class TestLocationWithoutEnv:
         monkeypatch.delenv("BORG_REPO", raising=False)
         assert (
             repr(Location("/abs/path:w:cols"))
-            == "Location(proto='file', user=None, host=None, port=None, path='/abs/path:w:cols')"
+            == "Location(proto='file', user=None, pass=None, host=None, port=None, path='/abs/path:w:cols')"
         )
         assert Location("/abs/path:w:cols").to_key_filename() == keys_dir + "_abs_path_w_cols"
         assert (
             repr(Location("file:///abs/path:w:cols"))
-            == "Location(proto='file', user=None, host=None, port=None, path='/abs/path:w:cols')"
+            == "Location(proto='file', user=None, pass=None, host=None, port=None, path='/abs/path:w:cols')"
         )
         assert Location("file:///abs/path:w:cols").to_key_filename() == keys_dir + "_abs_path_w_cols"
         assert (
             repr(Location("ssh://user@host/abs/path:w:cols"))
-            == "Location(proto='ssh', user='user', host='host', port=None, path='abs/path:w:cols')"
+            == "Location(proto='ssh', user='user', pass=None, host='host', port=None, path='abs/path:w:cols')"
         )
         assert Location("ssh://user@host/abs/path:w:cols").to_key_filename() == keys_dir + "host__abs_path_w_cols"