diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 9b62eb62..bcbe79cb 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -10,6 +10,11 @@ Features:
   ``__version_info__`` constants from ``__init__.py`` file. Users should use
   ``importlib.metadata`` instead (:pr:`1024`).
 
+Bug fixes:
+
+* Multi-value headers in ``TornadoParser`` are now retrieved using ``get_list()``
+  rather than ``get()`` (:issue:`1109`).
+
 Other changes:
 
 
diff --git a/src/webargs/tornadoparser.py b/src/webargs/tornadoparser.py
index 1b0c73d8..2bd6d959 100644
--- a/src/webargs/tornadoparser.py
+++ b/src/webargs/tornadoparser.py
@@ -55,6 +55,8 @@ def __getitem__(self, key: str) -> typing.Any:
             if value is core.missing:
                 return core.missing
             if key in self.multiple_keys:
+                if hasattr(self.data, "get_list"):
+                    value = self.data.get_list(key)
                 return [
                     _unicode(v) if isinstance(v, (str, bytes)) else v for v in value
                 ]
diff --git a/tests/test_tornadoparser.py b/tests/test_tornadoparser.py
index ee92eadd..df061a76 100644
--- a/tests/test_tornadoparser.py
+++ b/tests/test_tornadoparser.py
@@ -171,6 +171,14 @@ def test_it_should_get_multiple_values(self):
         result = parser.load_headers(request, author_schema)
         assert result["works"] == ["Prometheus Bound", "Prometheus Unbound"]
 
+    def test_it_should_get_multiple_values_from_httpheaders(self):
+        headers = tornado.httputil.HTTPHeaders()
+        headers.add("works", "Prometheus Bound")
+        headers.add("works", "Prometheus Unbound")
+        request = make_request(headers=headers)
+        result = parser.load_headers(request, author_schema)
+        assert result["works"] == ["Prometheus Bound", "Prometheus Unbound"]
+
     def test_it_should_return_missing_if_not_present(self):
         request = make_request()
         result = parser.load_headers(request, author_schema)