Ross McMains
| Boston Celtics | |
|---|---|
| Position | Assistant coach | 
| League | NBA | 
| Personal information | |
| Born | 1989 (age 35–36) New Hampshire, United States  | 
| Nationality | American / New Zealand | 
| Coaching career | 2013–present | 
| Career history | |
| As a coach: | |
| 2013–2015 | Reno Bighorns (assistant) | 
| 2016 | Taranaki Mountainairs | 
| 2016–2017 | Santa Cruz Warriors (assistant) | 
| 2017–2018 | Westchester Knicks (assistant) | 
| 2019–2020 | Melbourne United (assistant) | 
| 2021–2022 | Louisville Cardinals (assistant) | 
| 2022–2023 | Maine Red Claws (assistant) | 
| 2024–present | Boston Celtics (assistant) | 
| Career highlights | |
  | |
Fraser Ross McMains (born 1989) is an American-born New Zealand basketball coach. He is currently a player development coach with the Boston Celtics of the National Basketball Association (NBA).