Masao Ohba (?? ??, October 21, 1949 – January 25, 1973) was a professional boxer from Tokyo, Japan.
He became the WBA flyweight champion on October 22, 1970, defeating the reigning champion Berkrerk Chartvanchai in Tokyo and retained the championship for an impressive five title defenses.
He died in a car accident at 23, still holding his world title.