| Will Harrison | |
| Birth Date: | 30 July 1999 |
| Birth Place: | Sydney, Australia |
| Height: | 1780NaN0 |
| Weight: | 830NaN0 |
| School: | Marcellin College |
| Position: | First five-eighth, Fullback |
| Currentclub: | Sydney, Waratahs |
| Years1: | 2018–2019 |
| Clubs1: | Randwick |
| Apps1: | 8 |
| Points1: | 45 |
| Years2: | 2018– |
| Clubs2: | Sydney |
| Apps2: | 11 |
| Points2: | 70 |
| Years3: | 2020–2024 |
| Clubs3: | Waratahs |
| Apps3: | 38 |
| Points3: | 249 |
| Repyears1: | 2018–2019 |
| Repteam1: | Australia U20 |
| Repcaps1: | 9 |
| Reppoints1: | 55 |
| Repyears2: | 2020 |
| Repteam2: | Australia |
| Clubupdate: | 31 May 2024 |
| Repupdate: | 20 July 2020 |
Will Harrison (born 30 July 1999) is an Australian rugby union player who plays as a fly-half for the New South Wales Waratahs in Super Rugby. He signed for the Waratahs in 2019.[1] and was picked for the Australia national team in late 2020 under coach Dave Rennie.