Date of Birth: 
About Hamanoshima Keishi
- Hamanoshima Keishi (??? ??, born 21 March 1970 as Keishi Hamasu) is a former sumo wrestler from Uto, Kumamoto Prefecture, Japan.
- A former amateur champion, he turned professional in 1992, reaching the top makuuchi division in 1994.
- His highest rank was komusubi.
- After his retirement from active competition in 2004 he became an elder of the Japan Sumo Association and founded Onoe stable in 2006, which has produced a number of top division wrestlers.
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