| Birth Place: | Argentina |
| Ru Position: | Prop |
| Years1: | 2013– |
| Clubs1: | Hindú |
| Apps1: | 67 |
| Points1: | 75 |
| Ru Clubupdate: | 22 January 2018 |
| Superyears1: | 2018 |
| Super1: | Jaguares |
| Superapps1: | 0 |
| Superpoints1: | 0 |
| Super14update: | 22 January 2018 |
| Reppoints1: | 0 |
| Ru Ntupdate: | 22 January 2018 |
Nicolás Leiva is an Argentine rugby union player who plays for the Jaguares. On 2 January 2018, Leiva was named in the Jaguares squad for the 2018 Super Rugby season.[1]