diff --git a/changes/3310.feature.rst b/changes/3310.feature.rst
new file mode 100644
index 0000000000..b21d3219fc
--- /dev/null
+++ b/changes/3310.feature.rst
@@ -0,0 +1 @@
+Add obstore implementation of delete_dir.
diff --git a/src/zarr/storage/_obstore.py b/src/zarr/storage/_obstore.py
index e1469a991e..a311442555 100644
--- a/src/zarr/storage/_obstore.py
+++ b/src/zarr/storage/_obstore.py
@@ -13,6 +13,7 @@
     Store,
     SuffixByteRequest,
 )
+from zarr.core.common import concurrent_map
 from zarr.core.config import config
 
 if TYPE_CHECKING:
@@ -196,6 +197,18 @@ async def delete(self, key: str) -> None:
         with contextlib.suppress(FileNotFoundError):
             await obs.delete_async(self.store, key)
 
+    async def delete_dir(self, prefix: str) -> None:
+        # docstring inherited
+        import obstore as obs
+
+        self._check_writable()
+        if prefix != "" and not prefix.endswith("/"):
+            prefix += "/"
+
+        metas = await obs.list(self.store, prefix).collect_async()
+        keys = [(m["path"],) for m in metas]
+        await concurrent_map(keys, self.delete, limit=config.get("async.concurrency"))
+
     @property
     def supports_partial_writes(self) -> bool:
         # docstring inherited
diff --git a/tests/test_store/test_object.py b/tests/test_store/test_object.py
index d8b89e56b7..73681d54d4 100644
--- a/tests/test_store/test_object.py
+++ b/tests/test_store/test_object.py
@@ -90,6 +90,17 @@ async def test_store_getsize_prefix(self, store: ObjectStore) -> None:
         total_size = await store.getsize_prefix("c")
         assert total_size == len(buf) * 2
 
+    async def test_store_delete(self, store: ObjectStore) -> None:
+        assert store.supports_deletes
+        buf = cpu.Buffer.from_bytes(b"\x01\x02\x03\x04")
+        await store.set("foo/1", buf)
+        await store.set("foo/2", buf)
+        await store.delete("foo/1")
+        assert not await store.exists("foo/1")
+        assert await store.exists("foo/2")
+        await store.delete_dir("foo")  # FileNotFoundErrors are suppressed
+        assert not await store.exists("foo/2")
+
 
 @pytest.mark.slow_hypothesis
 def test_zarr_hierarchy():