Date of Birth: 
About Haguroyama Masaji
- Haguroyama Masaji (??? ??, November 18, 1914 – October 14, 1969) was a sumo wrestler from Nakanokuchi, Niigata, Japan.
- He was the sport's 36th yokozuna.
- He was a yokozuna for a period of twelve years and three months dating from his promotion to that rank in May 1941 until his retirement in September 1953, which was an all-time record until in 2019 by Hakuho.
- During his career Haguroyama won seven top division championships and was runner-up on six other occasions.
- However, he was always in the shadow of yokozuna Futabayama, who came from the same stable.
- After his retirement he was the head coach of Tatsunami stable until his death in 1969.
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