Saizo Kishimoto (????, Kishimoto Saizo, May 15, 1928 – January 17, 2014) was a Japanese gangster.
Born in Kobe, he joined the Japanese Imperial Navy air squadron during World War II.
After the war, he became a city employee of the Kobe City Office.
In 1955, he joined a clan with Yakuza leader Nakayama Yoshikazu under a branch of the Yamaguchi-gumi.
Over the next 40 years, he rose up the ladder in his gang and held the rank of so-honbucho, the headquarters chief of the Yamaguchi-gumi.
In late 2005, he was named leader of a more recent Yamaguchi-gumi clan, called the Hanshin-kai.
He was also the godfather or kumicho of the Kishimoto-gumi.