diff --git a/src/requests/cookies.py b/src/requests/cookies.py
index f69d0cda9e..fc1fec6bf5 100644
--- a/src/requests/cookies.py
+++ b/src/requests/cookies.py
@@ -408,7 +408,7 @@ def _find_no_duplicates(self, name, domain=None, path=None):
                         # we will eventually return this as long as no cookie conflict
                         toReturn = cookie.value
 
-        if toReturn:
+        if toReturn is not None:
             return toReturn
         raise KeyError(f"name={name!r}, domain={domain!r}, path={path!r}")
 
diff --git a/tests/test_requests.py b/tests/test_requests.py
index 75d2deff2e..e0100b5401 100644
--- a/tests/test_requests.py
+++ b/tests/test_requests.py
@@ -1299,6 +1299,14 @@ def test_cookie_as_dict_keeps_len(self):
         assert len(d2) == 2
         assert len(d3) == 2
 
+    def test_cookie_empty_value(self):
+        """Empty string cookie values should be retrievable."""
+        jar = requests.cookies.RequestsCookieJar()
+        jar.set("empty", "")
+
+        assert jar["empty"] == ""
+        assert jar.get("empty") == ""
+
     def test_cookie_as_dict_keeps_items(self):
         key = "some_cookie"
         value = "some_value"