| Native Name: | 天津風 征夫 |
| Amatsukaze Masao | |
| Birth Name: | Masao Miyanaga |
| Birth Date: | 1 December 1937 |
| Birth Place: | Monzen, Ishikawa, Japan |
| Death Date: | [1] |
| Weight: | 124kg (273lb) |
| Heya: | Tokitsukaze |
| Record: | 381-368-33 |
| Debut: | May, 1955 |
| Highestrank: | Maegashira 3 (September, 1962) |
| Retireddate: | May, 1967 |
| Yushos: | 2 (Jūryō) |
| Update: | Sep. 2012 |
Amatsukaze Masao, born Masao Miyanaga (1 December 1937 - 30 April 2013), was a sumo wrestler from Monzen, Ishikawa, Japan. He made his professional debut in May 1955 and reached the top division in September 1962. His highest rank was maegashira 3. He left the sumo world upon retirement in May 1967.