| Sex | Athlete | DOB | Discipline | Round | POS | Mark |
|---|---|---|---|---|---|---|
| M | Pedro Henrique DA SILVA | 30/04/2009 | Javelin Throw | Qualification | 12 | 59.73 |
| W | Hakelly DE SOUZA | 31/10/2008 | 100 Metres | Round 1 | 2 | 11.53 |
| W | Victoria CAMPOS | 11/06/2008 | 100 Metres | Round 1 | 6 | 11.87 |
| M | Jean Augusto DA SILVA | 04/03/2007 | 100 Metres | Round 1 | 4 | 10.58 |
| M | Michael CRUZ | 24/08/2007 | 100 Metres | Round 1 | 1 | 10.37 |
| M | Josue BARROS | 08/06/2008 | 800 Metres | Round 1 | 8 | 1:49.41 |
| M | Luan Gabriel DA CASTRO | 11/12/2007 | 800 Metres | Round 1 | DQ | |
| M | Alessandro BORGES | 02/04/2007 | Shot Put (6kg) | Qualification | 1 | 19.63 |
| W | Hakelly DE SOUZA | 31/10/2008 | 100 Metres | Semi-Finals | 5 | 11.56 |
| M | Michael CRUZ | 24/08/2007 | 100 Metres | Semi-Finals | 4 | 10.35 |
| M | Alessandro BORGES | 02/04/2007 | Shot Put (6kg) | Final | 1 | 20.35 |
| Sex | Athlete | DOB | Discipline | Round | POS | Mark |
|---|---|---|---|---|---|---|
| W | Edimara ALVES | 10/12/2007 | Shot Put | Qualification | 13 | 14.87 |
| W | Luana Cibele SOUSA | 08/04/2007 | 400 Metres Hurdles | Round 1 | 5 | 59.50 |
| W | Kyara BELFORT | 05/06/2009 | 400 Metres Hurdles | Round 1 | 3 | 59.37 |
| M | Dereck Alexandre ALVES | 25/02/2007 | High Jump | Qualification | 18 | 2.00 |
| M | Wilton DOS SANTOS | 20/02/2008 | 400 Metres Hurdles | Round 1 | 5 | 52.17 |
| M | Lucas DE ALMEIDA | 18/05/2008 | 400 Metres Hurdles | Round 1 | 3 | 51.78 |
| M | Benjamin DA SILVA | 02/02/2007 | Triple Jump | Qualification | 8 | 15.69 |
| M | Nicolas Izidoro DA SILVA | 02/12/2009 | Triple Jump | Qualification | 4 | 15.72 |
| X | Brazil U20 | 4x100 Metres Relay | Round 1 | 5 | 42.77 | |
| W | Hemily DE JESUS | 05/03/2007 | 400 Metres | Round 1 | 6 | 56.16 |
| W | Isadora JUSTINIANA | 17/06/2008 | 400 Metres | Round 1 | 7 | 55.50 |
| Sex | Athlete | DOB | Discipline | Round | POS | Mark |
|---|---|---|---|---|---|---|
| W | Kimberly Cristina DE SOUZA | 14/06/2007 | Hammer Throw | Qualification | 6 | 59.31 |
| W | Beatriz Camargo MONTEIRO | 12/11/2008 | 100 Metres Hurdles | Round 1 | 8 | 14.35 |
| W | Maria Clara VIEIRA | 26/11/2007 | High Jump | Qualification | 6 | 1.76 |
| M | Tiago GUIOTTI | 09/02/2007 | 110m Hurdles (99.0cm) | Round 1 | 5 | 13.90 |
| M | Odair GONCALVES | 23/02/2007 | 110m Hurdles (99.0cm) | Round 1 | 2 | 13.39 |
| W | Victoria CAMPOS | 11/06/2008 | 200 Metres | Round 1 | 5 | 24.29 |
| W | Hakelly DE SOUZA | 31/10/2008 | 200 Metres | Round 1 | 3 | 23.56 |
| M | Odair GONCALVES | 23/02/2007 | 110m Hurdles (99.0cm) | Semi-Finals | 2 | 13.19 |
| M | Nicolas Izidoro DA SILVA | 02/12/2009 | Triple Jump | Final | 12 | 15.15 |
| M | Benjamin DA SILVA | 02/02/2007 | Triple Jump | Final | 8 | 15.73 |
| W | Hakelly DE SOUZA | 31/10/2008 | 200 Metres | Semi-Finals | 6 | 23.60 |
| Sex | Athlete | DOB | Discipline | Round | POS | Mark |
|---|---|---|---|---|---|---|
| W | Karine MARTINS | 27/05/2008 | Triple Jump | Qualification | 5 | 12.99 |
| M | Davi Gabriel BASTOS | 12/04/2008 | 5000 Metres Race Walk | Final | 28 | 21:01.99 |
| W | Brazil U20 | 4x400 Metres Relay | Round 1 | 6 | 3:40.65 | |
| W | Brazil U20 | 4x100 Metres Relay | Round 1 | DNF | ||
| M | Brazil U20 | 4x100 Metres Relay | Round 1 | 5 | 40.42 | |
| W | Luana Cibele SOUSA | 08/04/2007 | 400 Metres Hurdles | Semi-Finals | 7 | 58.73 |
| W | Kyara BELFORT | 05/06/2009 | 400 Metres Hurdles | Semi-Finals | 5 | 59.72 |
| M | Lucas DE ALMEIDA | 18/05/2008 | 400 Metres Hurdles | Semi-Finals | 4 | 50.88 |
| M | Odair GONCALVES | 23/02/2007 | 110m Hurdles (99.0cm) | Final | 6 | 13.15 |
| Sex | Athlete | DOB | Discipline | Round | POS | Mark |
|---|---|---|---|---|---|---|
| W | Kimberly Cristina DE SOUZA | 14/06/2007 | Hammer Throw | Final | 11 | 58.99 |
| W | Karine MARTINS | 27/05/2008 | Triple Jump | Final | 9 | 12.80 |