| Laghlan McWhannell | |
| Birth Date: | 20 October 1998 |
| Birth Place: | Cambridge, New Zealand |
| Height: | 1980NaN0 |
| Weight: | 1140NaN0 |
| School: | St. Peter's School |
| Position: | Lock |
| Currentclub: | Waikato, Chiefs, Blues |
| Years1: | 2017– |
| Clubs1: | Waikato |
| Apps1: | 30 |
| Points1: | 25 |
| Years2: | 2020–2023 |
| Clubs2: | Chiefs |
| Apps2: | 7 |
| Points2: | 5 |
| Repyears1: | 2018 |
| Repteam1: | New Zealand U20 |
| Repcaps1: | 6 |
| Reppoints1: | 0 |
| Clubupdate: | 17 July 2023 |
| Repupdate: | 20 June 2020 |
Laghlan McWhannell (born 29 October 1998 in New Zealand) is a New Zealand rugby union player who plays for the in Super Rugby. His playing position is lock. He has signed for the Chiefs squad in 2019.[1]