diff --git a/datasette/url_builder.py b/datasette/url_builder.py
index 3f54730b..eebfe31e 100644
--- a/datasette/url_builder.py
+++ b/datasette/url_builder.py
@@ -31,10 +31,10 @@ class Urls:
         db = self.ds.databases[database]
         if self.ds.setting("hash_urls") and db.hash:
             path = self.path(
-                f"{urllib.parse.quote(database)}-{db.hash[:HASH_LENGTH]}", format=format
+                f"{dash_encode(database)}-{db.hash[:HASH_LENGTH]}", format=format
             )
         else:
-            path = self.path(urllib.parse.quote(database), format=format)
+            path = self.path(dash_encode(database), format=format)
         return path
 
     def table(self, database, table, format=None):
diff --git a/datasette/views/base.py b/datasette/views/base.py
index 6d9a5743..7cd385b7 100644
--- a/datasette/views/base.py
+++ b/datasette/views/base.py
@@ -205,17 +205,17 @@ class DataView(BaseView):
     async def resolve_db_name(self, request, db_name, **kwargs):
         hash = None
         name = None
-        db_name = urllib.parse.unquote_plus(db_name)
-        if db_name not in self.ds.databases and "-" in db_name:
+        decoded_name = dash_decode(db_name)
+        if decoded_name not in self.ds.databases and "-" in db_name:
             # No matching DB found, maybe it's a name-hash?
             name_bit, hash_bit = db_name.rsplit("-", 1)
-            if name_bit not in self.ds.databases:
+            if dash_decode(name_bit) not in self.ds.databases:
                 raise NotFound(f"Database not found: {name}")
             else:
-                name = name_bit
+                name = dash_decode(name_bit)
                 hash = hash_bit
         else:
-            name = db_name
+            name = decoded_name
 
         try:
             db = self.ds.databases[name]
diff --git a/tests/test_api.py b/tests/test_api.py
index caedd1ac..dd916cf0 100644
--- a/tests/test_api.py
+++ b/tests/test_api.py
@@ -942,7 +942,7 @@ def test_cors(app_client_with_cors, path, status_code):
 )
 def test_database_with_space_in_name(app_client_two_attached_databases, path):
     response = app_client_two_attached_databases.get(
-        "/extra database" + path, follow_redirects=True
+        "/extra-20database" + path, follow_redirects=True
     )
     assert response.status == 200
 
@@ -953,7 +953,7 @@ def test_common_prefix_database_names(app_client_conflicting_database_names):
         d["name"]
         for d in app_client_conflicting_database_names.get("/-/databases.json").json
     ]
-    for db_name, path in (("foo", "/foo.json"), ("foo-bar", "/foo-bar.json")):
+    for db_name, path in (("foo", "/foo.json"), ("foo-bar", "/foo-2Dbar.json")):
         data = app_client_conflicting_database_names.get(path).json
         assert db_name == data["database"]
 
@@ -992,3 +992,16 @@ async def test_hidden_sqlite_stat1_table():
     data = (await ds.client.get("/db.json?_show_hidden=1")).json()
     tables = [(t["name"], t["hidden"]) for t in data["tables"]]
     assert tables == [("normal", False), ("sqlite_stat1", True)]
+
+
+@pytest.mark.asyncio
+@pytest.mark.parametrize("db_name", ("foo", r"fo%o", "f~/c.d"))
+async def test_dash_encoded_database_names(db_name):
+    ds = Datasette()
+    ds.add_memory_database(db_name)
+    response = await ds.client.get("/.json")
+    assert db_name in response.json().keys()
+    path = response.json()[db_name]["path"]
+    # And the JSON for that database
+    response2 = await ds.client.get(path + ".json")
+    assert response2.status_code == 200
diff --git a/tests/test_cli.py b/tests/test_cli.py
index 3fbfdee2..e30c2ad3 100644
--- a/tests/test_cli.py
+++ b/tests/test_cli.py
@@ -9,6 +9,7 @@ from datasette.app import SETTINGS
 from datasette.plugins import DEFAULT_PLUGINS
 from datasette.cli import cli, serve
 from datasette.version import __version__
+from datasette.utils import dash_encode
 from datasette.utils.sqlite import sqlite3
 from click.testing import CliRunner
 import io
@@ -294,12 +295,12 @@ def test_weird_database_names(ensure_eventloop, tmpdir, filename):
     assert result1.exit_code == 0, result1.output
     filename_no_stem = filename.rsplit(".", 1)[0]
     expected_link = '<a href="/{}">{}</a>'.format(
-        urllib.parse.quote(filename_no_stem), filename_no_stem
+        dash_encode(filename_no_stem), filename_no_stem
     )
     assert expected_link in result1.output
     # Now try hitting that database page
     result2 = runner.invoke(
-        cli, [db_path, "--get", "/{}".format(urllib.parse.quote(filename_no_stem))]
+        cli, [db_path, "--get", "/{}".format(dash_encode(filename_no_stem))]
     )
     assert result2.exit_code == 0, result2.output
 
diff --git a/tests/test_html.py b/tests/test_html.py
index f6456aa5..b4a12b8a 100644
--- a/tests/test_html.py
+++ b/tests/test_html.py
@@ -29,7 +29,7 @@ def test_homepage(app_client_two_attached_databases):
     )
     # Should be two attached databases
     assert [
-        {"href": r"/extra%20database", "text": "extra database"},
+        {"href": r"/extra-20database", "text": "extra database"},
         {"href": "/fixtures", "text": "fixtures"},
     ] == [{"href": a["href"], "text": a.text.strip()} for a in soup.select("h2 a")]
     # Database should show count text and attached tables
@@ -44,8 +44,8 @@ def test_homepage(app_client_two_attached_databases):
         {"href": a["href"], "text": a.text.strip()} for a in links_p.findAll("a")
     ]
     assert [
-        {"href": r"/extra%20database/searchable", "text": "searchable"},
-        {"href": r"/extra%20database/searchable_view", "text": "searchable_view"},
+        {"href": r"/extra-20database/searchable", "text": "searchable"},
+        {"href": r"/extra-20database/searchable_view", "text": "searchable_view"},
     ] == table_links