| Leonardo Ataíde | |
| Fullname: | Leonardo Ataíde de Oliveira Siqueira |
| Birth Date: | 19 January 2004 |
| Birth Place: | Piracicaba, São Paulo, Brazil |
| Position: | Right-back |
| Currentclub: | Athletico Paranaense |
| Youthyears1: | –2022 |
| Youthclubs1: | Athletico Paranaense |
| Years1: | 2022– |
| Caps1: | 4 |
| Goals1: | 0 |
| Nationalyears1: | 2019 |
| Nationalteam1: | Brazil U15 |
| Nationalyears2: | 2019 |
| Nationalteam2: | Brazil U16 |
| Nationalcaps2: | 4 |
| Nationalgoals2: | 0 |
| Club-Update: | 14 February 2022 |
| Nationalteam-Update: | 14 February 2022 |
Leonardo Ataíde de Oliveira Siqueira (born 19 January 2004) is a Brazilian professional footballer who plays as an right-back for Athletico Paranaense.