| Native Name: | 琴ヶ嶽 綱一 |
| Kotogatake Koichi | |
| Birth Name: | Yoshikazu Takeuchi |
| Birth Date: | 1952 9, df=yes |
| Birth Place: | Teshikaga, Japan |
| Death Place: | Hokkaido, Japan |
| Weight: | 105kg (231lb) |
| Heya: | Sadogatake |
| Record: | 493-472-1 |
| Debut: | November, 1967 |
| Highestrank: | Maegashira 1 (May 1977) |
| Retireddate: | March, 1984 |
| Eldername: | Shiratama |
| Yushos: | 1 (Jūryō) 1 (Makushita) |
| Update: | June 2020 |
Kotogatake Koichi (born Yoshikazu Takeuchi; 24 September 1952 – 24 February 2024) was a Japanese sumo wrestler from Teshikaga, Hokkaidō.
He made his professional debut in November 1967 and reached the top division in July 1976. His highest rank was maegashira 1.
Upon retirement from active competition he became an elder in the Japan Sumo Association. He left the Sumo Association in March 1995.[1]
Koichi died from heart failure on 24 February 2024, at the age of 71.[2]