Saburō Kurusu was a Japanese career diplomat. He is remembered now as an envoy who tried to negotiate peace and understanding with the United States while the Japanese government under Hideki Tojo was secretly preparing the attack on Pearl Harbor.
As Imperial Japan's ambassador to Germany from 1939 to November 1941, he signed the Tripartite Pact along with the foreign ministers of Nazi Germany and Fascist Italy on September 27, 1940.