| Challenger Tenerife | 01/15 11:50 | 14 | [322] Gabriel Decamps v Ernests Gulbis [311] | Retired | |
| Challenger Oeiras | 01/10 14:20 | 25 | [322] Gabriel Decamps v Pol M Tiffon [292] | 6-7,7-6,4-6 | |
| Challenger Oeiras | 01/09 13:25 | 19 | [322] Gabriel Decamps v Kenny de Schepper [345] | 3-6,6-3,7-5 | |
| Challenger Oeiras Qual | 01/08 14:20 | 14 | Gabriel Decamps v Henrique Rocha | 7-5,6-3 | |
| Challenger Oeiras | 01/03 17:50 | 25 | [323] Gabriel Decamps v Jay Clarke [240] | 6-7,1-6 | |
| Challenger Temuco | 11/23 17:05 | 26 | [281] Gabriel Decamps v Juan Bautista Otegui [432] | 6-7,4-6 | |
| Challenger Temuco | 11/21 20:35 | 25 | [281] Gabriel Decamps v Wilson Leite [417] | 6-3,6-0 | |
| Challenger Drummondville | 11/14 23:30 | 25 | [214] Alexis Galarneau v Gabriel Decamps [279] | 3-6,6-2,7-6 | |
| Challenger Calgary | 11/09 17:00 | 26 | [280] Gabriel Decamps v Antoine Escoffier [216] | 5-7,3-6 | |
| Challenger Calgary | 11/08 23:55 | 25 | Johannes Haerteis v Gabriel Decamps | 5-7,4-6 | |
| Challenger Brest | 10/25 19:20 | 25 | [63] Benjamin Bonzi v Gabriel Decamps [277] | 7-5,7-5 | |
| Challenger Vilnius | 10/18 10:00 | 25 | [277] Gabriel Decamps v Nerman Fatic [195] | 4-6,5-7 | |
| Challenger Ismaning | 10/13 11:00 | 26 | [276] Gabriel Decamps v Kacper Zuk [269] | 1-6,4-6 | |
| Challenger Ismaning | 10/11 19:10 | 25 | [436] Matthias Bachinger v Gabriel Decamps [276] | 0-6,6-1,4-6 | |
| Challenger Alicante | 10/03 13:45 | 25 | [228] Nicolas Alvarez Varona v Gabriel Decamps [264] | 6-2,7-5 | |
| Challenger Rennes | 09/12 15:35 | 25 | Clement Chidekh v Gabriel Decamps | 6-2,5-7,6-1 | |
| Challenger Nonthaburi | 09/03 06:35 | 28 | [286] Gabriel Decamps v Omar Jasika [367] | Retired | |
| Challenger Nonthaburi | 09/02 05:25 | 27 | [286] Gabriel Decamps v Federico Gaio [330] | 6-3,7-5 | |
| Challenger Nonthaburi | 09/01 04:40 | 26 | Gabriel Decamps v Kasidit Samrej | 6-4,6-4 | |
| Challenger Nonthaburi | 08/29 07:10 | 25 | [286] Gabriel Decamps v Sergey Fomin [353] | 6-2,6-2 | |
| Challenger Nonthaburi | 08/24 05:15 | 26 | [341] Dane Sweeny v Gabriel Decamps [280] | 6-3,6-4 | |
| Challenger Nonthaburi | 08/23 03:30 | 25 | [352] Sergey Fomin v Gabriel Decamps [280] | Retired | |
| Challenger Grodzisk Mazowiecki | 08/19 12:00 | 27 | [295] Harold Mayot v Gabriel Decamps [302] | 6-4,7-6 | |
| Challenger Grodzisk Mazowiecki | 08/18 08:30 | 26 | [302] Gabriel Decamps v Sebastian Ofner [224] | 7-6,6-4 | |
| Challenger Grodzisk Mazowiecki | 08/16 12:25 | 25 | [302] Gabriel Decamps v Oleksii Krutykh [270] | 6-7,6-2,7-6 | |
| Challenger Segovia | 07/26 11:40 | 25 | [307] Gabriel Decamps v Ugo Humbert [152] | 3-6,4-6 | |
| Challenger Segovia | 07/25 09:00 | 19 | [307] Gabriel Decamps v Yan Bondarevskiy [448] | 6-2,6-4 | |
| Challenger Segovia | 07/24 08:00 | 14 | [328] Gabriel Decamps v Inigo Cervantes [304] | 7-5,6-2 | |
| Challenger Nur-Sultan | 07/22 07:40 | 27 | [341] Denis Yevseyev v Gabriel Decamps [328] | 6-4,2-6,6-4 | |
| Challenger Nur-Sultan | 07/20 11:15 | 26 | [328] Gabriel Decamps v Mikhail Kukushkin [213] | 6-3,6-7,6-3 |
Gabriel Décamps (born 7 August 1999) is a Brazilian tennis player.
Décamps has a career high ATP singles ranking of 262 achieved on 19 September 2022. He also has a career high doubles ranking of 406 achieved on 6 March 2023.
Décamps has won 1 ATP Challenger doubles title at the 2022 Shymkent Challenger with Antoine Bellier.
Décamps played college tennis at Central Florida.
In April 2023, Décamps announced his temporary withdrawal of professional tennis due mental health issues.
In September 2023, Décamps returned his tennis activities after a five months temporary withdrawal.