Masashi Kudo (工藤 政志, Kudō Masashi, born August 24, 1951) is a Japanese former professional boxer who competed from 1973 to 1979. He held the WBA and lineal super welterweight titles from 1978 to 1979.

Kudo was an amateur wrestler during high school, and only became a professional boxer when he failed to join the Japanese Olympic wrestling team for the 1972 Munich Olympics. He made his professional debut in May, 1973, and won the Japanese middleweight title in his 6th professional fight. He defended the title 8 times before returning it to Japanese Boxing Commission.

In 1978, he moved down to the light middleweight division to challenge Eddie Gazo for the WBA and lineal light middleweight titles. Kudo won by 15 round split-decision, becoming the second Japanese boxer to capture the world light middleweight crown since Koichi Wajima.^[1]

Kudo defended his title three times including against Korean contender Ho Joo,^[2] before losing to undefeated challenger Ayub Kalule by unanimous decision for his only professional loss.^[3] He announced his retirement after the fight at only 28 years of age. His record was 23-1-0 (12KOs).

Kudo was possibly one of the least technically skilled champions in boxing history. He compensated for his lack of skill by displaying an enormous amount of stamina and strength, and retired without suffering a single knockdown.

• List of world light-middleweight boxing champions
• List of Japanese boxing world champions
• Boxing in Japan