| Genesis Mamea Lemalu | |
| Fullname: | Genesis Pelepele Mamea Lemalu |
| Birth Date: | 22 September 1988 |
| Birth Place: | Samoa |
| Height: | 1920NaN0 |
| Weight: | 1090NaN0 |
| School: | St Bernard's College |
| Position: | Flanker |
| Years1: | 2012–2013 |
| Apps1: | 13 |
| Points1: | 0 |
| Years2: | 2013–2014 |
| Apps2: | 11 |
| Points2: | 5 |
| Years3: | 2014–2016 |
| Clubs3: | Bourgoin-Jallieu |
| Apps3: | 42 |
| Points3: | 20 |
| Years4: | 2016– |
| Apps4: | 113 |
| Points4: | 130 |
| Repyears1: | 2009 |
| Repteam1: | Samoa U20 |
| Repcaps1: | 5 |
| Reppoints1: | 0 |
| Repyears2: | 2016– |
| Repteam2: | Samoa |
| Repcaps2: | 4 |
| Reppoints2: | 0 |
| Clubupdate: | 1 November 2021 |
| Repupdate: | 1 November 2021 |
Genesis Mamea Lemalu (born 22 September 1988 in Samoa)[1] is a Samoan rugby union player who plays for in the Top 14. His playing position is flanker. Mamea Lemalu signed for in 2016, having previously represented, and Bourgoin-Jallieu.[2] He made his debut for Samoa in 2016 against France.[3]