Date of Birth: 
About Masudayama Yasuhito
- Masudayama Yasuhito (??? ??, born 10 April 1951 as Shigeru Masuda) is a former sumo wrestler from Nanao, Ishikawa, Japan.
- He made his professional debut in March 1974, and reached the top division in November 1976.
- His highest rank was sekiwake.
- He retired in July 1989 and became an elder in the Japan Sumo Association under the name Chiganoura.
- He was the oldest man in any of the professional sumo divisions at the time of his retirement.
- He set up Chiganoura stable in 2004 at the age of 53, after he was passed over for the head coach position at Kasugano stable the previous year.
- He retired upon reaching 65 years of age in April 2016, but was re-employed by his stable as a consultant.
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