diff --git a/superset/dashboards/api.py b/superset/dashboards/api.py
index 76787117fd61c..763438e047a54 100644
--- a/superset/dashboards/api.py
+++ b/superset/dashboards/api.py
@@ -19,7 +19,7 @@
 from datetime import datetime
 from io import BytesIO
 from typing import Any, Dict
-from zipfile import ZipFile
+from zipfile import is_zipfile, ZipFile
 
 from flask import g, make_response, redirect, request, Response, send_file, url_for
 from flask_appbuilder.api import expose, protect, rison, safe
@@ -787,8 +787,12 @@ def import_(self) -> Response:
         upload = request.files.get("formData")
         if not upload:
             return self.response_400()
-        with ZipFile(upload) as bundle:
-            contents = get_contents_from_bundle(bundle)
+        if is_zipfile(upload):
+            with ZipFile(upload) as bundle:
+                contents = get_contents_from_bundle(bundle)
+        else:
+            upload.seek(0)
+            contents = {upload.filename: upload.read()}
 
         passwords = (
             json.loads(request.form["passwords"])
diff --git a/superset/dashboards/commands/importers/v0.py b/superset/dashboards/commands/importers/v0.py
index 851ecab941319..5a24c9309c457 100644
--- a/superset/dashboards/commands/importers/v0.py
+++ b/superset/dashboards/commands/importers/v0.py
@@ -317,7 +317,9 @@ class ImportDashboardsCommand(BaseCommand):
     in Superset.
     """
 
-    def __init__(self, contents: Dict[str, str], database_id: Optional[int] = None):
+    def __init__(
+        self, contents: Dict[str, str], database_id: Optional[int] = None, **kwargs: Any
+    ):
         self.contents = contents
         self.database_id = database_id
 
diff --git a/superset/datasets/api.py b/superset/datasets/api.py
index 96f3532265da0..30ad5bdd677dd 100644
--- a/superset/datasets/api.py
+++ b/superset/datasets/api.py
@@ -20,7 +20,7 @@
 from distutils.util import strtobool
 from io import BytesIO
 from typing import Any
-from zipfile import ZipFile
+from zipfile import is_zipfile, ZipFile
 
 import yaml
 from flask import g, request, Response, send_file
@@ -687,8 +687,12 @@ def import_(self) -> Response:
         upload = request.files.get("formData")
         if not upload:
             return self.response_400()
-        with ZipFile(upload) as bundle:
-            contents = get_contents_from_bundle(bundle)
+        if is_zipfile(upload):
+            with ZipFile(upload) as bundle:
+                contents = get_contents_from_bundle(bundle)
+        else:
+            upload.seek(0)
+            contents = {upload.filename: upload.read()}
 
         passwords = (
             json.loads(request.form["passwords"])
diff --git a/tests/dashboards/api_tests.py b/tests/dashboards/api_tests.py
index a9b0ca4812f45..7bef2edeebda1 100644
--- a/tests/dashboards/api_tests.py
+++ b/tests/dashboards/api_tests.py
@@ -45,6 +45,7 @@
     chart_config,
     database_config,
     dashboard_config,
+    dashboard_export,
     dashboard_metadata_config,
     dataset_config,
     dataset_metadata_config,
@@ -1316,6 +1317,38 @@ def test_import_dashboard(self):
         db.session.delete(database)
         db.session.commit()
 
+    def test_import_dashboard_v0_export(self):
+        num_dashboards = db.session.query(Dashboard).count()
+
+        self.login(username="admin")
+        uri = "api/v1/dashboard/import/"
+
+        buf = BytesIO()
+        buf.write(json.dumps(dashboard_export).encode())
+        buf.seek(0)
+        form_data = {
+            "formData": (buf, "20201119_181105.json"),
+        }
+        rv = self.client.post(uri, data=form_data, content_type="multipart/form-data")
+        response = json.loads(rv.data.decode("utf-8"))
+
+        assert rv.status_code == 200
+        assert response == {"message": "OK"}
+        assert db.session.query(Dashboard).count() == num_dashboards + 1
+
+        dashboard = (
+            db.session.query(Dashboard).filter_by(dashboard_title="Births 2").one()
+        )
+        chart = dashboard.slices[0]
+        dataset = chart.table
+        database = dataset.database
+
+        db.session.delete(dashboard)
+        db.session.delete(chart)
+        db.session.delete(dataset)
+        db.session.delete(database)
+        db.session.commit()
+
     def test_import_dashboard_overwrite(self):
         """
         Dashboard API: Test import existing dashboard
diff --git a/tests/datasets/api_tests.py b/tests/datasets/api_tests.py
index 6b628d7d2472f..00be830fcf8f0 100644
--- a/tests/datasets/api_tests.py
+++ b/tests/datasets/api_tests.py
@@ -47,6 +47,7 @@
     database_metadata_config,
     dataset_config,
     dataset_metadata_config,
+    dataset_ui_export,
 )
 
 
@@ -1275,6 +1276,31 @@ def test_import_dataset(self):
         db.session.delete(database)
         db.session.commit()
 
+    def test_import_dataset_v0_export(self):
+        num_datasets = db.session.query(SqlaTable).count()
+
+        self.login(username="admin")
+        uri = "api/v1/dataset/import/"
+
+        buf = BytesIO()
+        buf.write(json.dumps(dataset_ui_export).encode())
+        buf.seek(0)
+        form_data = {
+            "formData": (buf, "dataset_export.zip"),
+        }
+        rv = self.client.post(uri, data=form_data, content_type="multipart/form-data")
+        response = json.loads(rv.data.decode("utf-8"))
+
+        assert rv.status_code == 200
+        assert response == {"message": "OK"}
+        assert db.session.query(SqlaTable).count() == num_datasets + 1
+
+        dataset = (
+            db.session.query(SqlaTable).filter_by(table_name="birth_names_2").one()
+        )
+        db.session.delete(dataset)
+        db.session.commit()
+
     def test_import_dataset_overwrite(self):
         """
         Dataset API: Test import existing dataset