| Challenger Nur-Sultan | 07/19 05:25 | 25 | [361] Ivan Liutarevich v Gabriel Decamps [328] | 6-2,3-6,4-6 | |
| Challenger Porto | 07/05 09:00 | 25 | [332] Gabriel Decamps v Egor Gerasimov [144] | 7-6,4-6,1-6 | |
| Challenger Porto | 07/04 11:40 | 19 | Gabriel Decamps v Duarte Vale | 6-2,6-3 | |
| Challenger Porto | 07/03 16:45 | 14 | [332] Gabriel Decamps v Fabio Coelho [496] | 6-2,6-1 | |
| Challenger Malaga | 06/28 13:15 | 25 | [332] Gabriel Decamps v Michael Mmoh [177] | 5-7,1-6 | |
| Challenger Malaga | 06/27 08:30 | 19 | [331] Gabriel Decamps v Johannes Haerteis [439] | 6-4,6-1 | |
| Challenger Blois | 06/14 13:00 | 25 | [340] Gabriel Decamps v Camilo Ugo Carabelli [131] | 2-6,3-6 | |
| Challenger Blois | 06/13 11:40 | 19 | Gabriel Decamps v Calvin Hemery | 7-6,4-6,6-3 | |
| Challenger Blois | 06/12 12:05 | 14 | [288] Maxime Janvier v Gabriel Decamps [370] | 7-6,6-7,5-7 | |
| Challenger Lyon | 06/08 09:00 | 26 | [370] Gabriel Decamps v Alexey Vatutin [331] | 5-7,1-6 | |
| Challenger Lyon | 06/07 11:35 | 25 | [370] Gabriel Decamps v Thiago Seyboth Wild [264] | 6-2,6-3 | |
| Challenger Lyon | 06/06 08:00 | 19 | [371] Kenny de Schepper v Gabriel Decamps [370] | 2-6,6-7 | |
| Challenger Lyon | 06/05 08:00 | 14 | [398] Shintaro Mochizuki v Gabriel Decamps [368] | 3-6,5-7 | |
| ITF M25 La Nucia | 06/02 12:35 | 26 | Daniel Rincon v Gabriel Decamps | 7-6,6-3 | |
| ITF M25 La Nucia | 06/01 14:40 | 25 | Pol Amoros Ramos v Gabriel Decamps | 0-6,0-6 | |
| Challenger Shymkent | 05/18 06:20 | 26 | [384] Gabriel Decamps v Illya Marchenko [252] | 1-6,1-6 | |
| Challenger Shymkent | 05/16 10:10 | 25 | [350] Mikael Torpegaard v Gabriel Decamps [384] | 2-6,4-6 | |
| Challenger Shymkent | 05/09 08:05 | 25 | [381] Gabriel Decamps v Illya Marchenko [254] | 3-6,1-6 | |
| Challenger Shymkent | 05/08 04:00 | 14 | Gabriel Decamps v Savriyan Danilov | Cancelled | |
| Challenger Aix en Provence | 05/01 14:10 | 14 | [415] Martin Cuevas v Gabriel Decamps [376] | 6-0,6-3 | |
| Challenger Aguascalientes | 04/17 18:30 | 14 | [455] Matias Zukas v Gabriel Decamps [373] | 6-1,6-3 | |
| Challenger San Luis Potosi | 04/10 19:40 | 14 | [373] Gabriel Decamps v Elmar Ejupovic [450] | 3-6,6-7 | |
| Challenger Sanremo | 04/04 08:00 | 19 | [373] Gabriel Decamps v Edoardo Lavagno [392] | 2-6,6-7 | |
| Challenger Sanremo | 04/03 08:00 | 14 | Gabriel Decamps v Simon Carr | 7-5,7-5 | |
| Challenger Biel | 03/20 09:00 | 14 | [418] Georgii Kravchenko v Gabriel Decamps [385] | Cancelled | |
| ITF M25 Loule | 03/17 16:55 | 25 | Adria S Barrera v Gabriel Decamps | 7-5,6-2 | |
| ITF M25 Portimao | 03/11 11:30 | 27 | [260] Marius Copil v Gabriel Decamps [385] | 4-6,6-3,7-6 | |
| ITF M25 Portimao | 03/10 11:45 | 26 | [385] Gabriel Decamps v Michael Vrbensky [393] | 6-3,6-3 | |
| ITF M25 Portimao | 03/08 14:40 | 25 | [480] Tiago Cacao v Gabriel Decamps [385] | 3-6,2-6 | |
| ITF M25 Vale Do Lobo | 02/26 10:30 | 28 | Alejandro Moro Canas v Gabriel Decamps | 6-3,6-4 |
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.