diff --git a/libs/community/langchain_community/graphs/neo4j_graph.py b/libs/community/langchain_community/graphs/neo4j_graph.py
index f19ff07330c..309f5301250 100644
--- a/libs/community/langchain_community/graphs/neo4j_graph.py
+++ b/libs/community/langchain_community/graphs/neo4j_graph.py
@@ -346,18 +346,27 @@ class Neo4jGraph(GraphStore):
             )
 
         url = get_from_dict_or_env({"url": url}, "url", "NEO4J_URI")
-        username = get_from_dict_or_env(
-            {"username": username}, "username", "NEO4J_USERNAME"
-        )
-        password = get_from_dict_or_env(
-            {"password": password}, "password", "NEO4J_PASSWORD"
-        )
+        # if username and password are "", assume Neo4j auth is disabled
+        if username == "" and password == "":
+            auth = None
+        else:
+            username = get_from_dict_or_env(
+                {"username": username},
+                "username",
+                "NEO4J_USERNAME",
+            )
+            password = get_from_dict_or_env(
+                {"password": password},
+                "password",
+                "NEO4J_PASSWORD",
+            )
+            auth = (username, password)
         database = get_from_dict_or_env(
             {"database": database}, "database", "NEO4J_DATABASE", "neo4j"
         )
 
         self._driver = neo4j.GraphDatabase.driver(
-            url, auth=(username, password), **(driver_config or {})
+            url, auth=auth, **(driver_config or {})
         )
         self._database = database
         self.timeout = timeout