- Source: Masakatsu Nishikawa (rugby union)
- Yukio Mishima
- Masakatsu Nishikawa
- Masakatsu Nishikawa (rugby union)
- List of 2018–19 Super Rugby transfers
- 2018 June rugby union tests
- List of Japan national rugby union players
- 2019 Super Rugby season
- List of 2017–18 Super Rugby transfers
- 2018 end-of-year rugby union internationals
- 2018 Super Rugby season
- Yukio Mishima
Masakatsu Nishikawa (まさかつ にしかわ, Nishikawa Masakatsu, born 18 May 1987) is a Japanese rugby union player who plays as a Flanker. He currently plays for Sunwolves in Super Rugby and Suntory Sungoliath in Japan's domestic Top League.