| Native Name: | 天水山 正則 |
| Tensuiyama Masanori | |
| Birth Name: | Masanori Ikeda |
| Birth Date: | 1940 12, df=yes |
| Birth Place: | Tensui, Kumamoto |
| Weight: | 128kg (282lb) |
| Heya: | Araiso → Isegahama |
| Record: | 397-367-2 |
| Debut: | May, 1956 |
| Highestrank: | Maegashira 10 (July, 1965) |
| Retireddate: | September, 1968 |
| Yushos: | 2 (Jūryō) 1 (Makushita) |
| Update: | Sep. 2012 |
Tensuiyama Masanori (born 8 December 1940 as Masanori Ikeda) is a former sumo wrestler from Tensui, Kumamoto, Japan. He made his professional debut in May 1956, and reached the top division in May 1965. His highest rank was maegashira 10. He left the sumo world upon retirement in September 1968.