| Full Name: | Thierb da Costa Siqueira |
| Birth Place: | Rio Branco, Brazil |
| Height: | 1.78 m |
| Sport: | Para athletics |
| Event: | Sprint |
| Disability Class: | T12 |
| Headercolor: | lightsteelblue |
| Show-Medals: | yes |
Thierb da Costa Siqueira (born 12 February 1990) is a Brazilian sprinter.[1]
Siqueria represented Brazil at the 2011 Parapan American Games, winning two gold medals and one silver medal. Siqueria also represented Brazil at the 2012 Summer Paralympics.