| Teamname: | Yokogawa Musashino Atlastars 横河武蔵野アトラスターズ |
| Fullname: | Yokogawa Musashino Atlastars |
| Nickname: | Atlastars |
| Countryflag: | Japan |
| Pattern B1: | _lightbluequarters14 |
| Leftarm1: | 0404B4 |
| Body1: | 0404B4 |
| Rightarm1: | 0404B4 |
| Shorts1: | 0404B4 |
| Socks1: | 0404B4 |
Yokogawa Musashino Atlastars is a Japanese rugby union team based in Musashino, Tokyo.They won promotion to the Top League for one season in 2008–09 being relegated that same season.
The team was founded as Yokogawa Denki in 1946.
Fa'atonu Fili Signed on 2 year deal with option of 3rd