| Challenger de Nur-Sultan | 07/22 07:40 | 27 | [341] Denis Yevseyev v Gabriel Decamps [328] | 6-4,2-6,6-4 | |
| Challenger de Nur-Sultan | 07/20 11:15 | 26 | [328] Gabriel Decamps v Mikhail Kukushkin [213] | 6-3,6-7,6-3 | |
| Challenger de Nur-Sultan | 07/19 05:25 | 25 | [361] Ivan Liutarevich v Gabriel Decamps [328] | 6-2,3-6,4-6 | |
| Challenger de Porto | 07/05 09:00 | 25 | [332] Gabriel Decamps v Egor Gerasimov [144] | 7-6,4-6,1-6 | |
| Challenger de Porto | 07/04 11:40 | 19 | Gabriel Decamps v Duarte Vale | 6-2,6-3 | |
| Challenger de Porto | 07/03 16:45 | 14 | [332] Gabriel Decamps v Fabio Coelho [496] | 6-2,6-1 | |
| Challenger de Málaga | 06/28 13:15 | 25 | [332] Gabriel Decamps v Michael Mmoh [177] | 5-7,1-6 | |
| Challenger de Málaga | 06/27 08:30 | 19 | [331] Gabriel Decamps v Johannes Haerteis [439] | 6-4,6-1 | |
| Challenger de Blois | 06/14 13:00 | 25 | [340] Gabriel Decamps v Camilo Ugo Carabelli [131] | 2-6,3-6 | |
| Challenger de Blois | 06/13 11:40 | 19 | Gabriel Decamps v Calvin Hemery | 7-6,4-6,6-3 | |
| Challenger de Blois | 06/12 12:05 | 14 | [288] Maxime Janvier v Gabriel Decamps [370] | 7-6,6-7,5-7 | |
| Challenger de Lyon | 06/08 09:00 | 26 | [370] Gabriel Decamps v Alexey Vatutin [331] | 5-7,1-6 | |
| Challenger de Lyon | 06/07 11:35 | 25 | [370] Gabriel Decamps v Thiago Seyboth Wild [264] | 6-2,6-3 | |
| Challenger de Lyon | 06/06 08:00 | 19 | [371] Kenny de Schepper v Gabriel Decamps [370] | 2-6,6-7 | |
| Challenger de Lyon | 06/05 08:00 | 14 | [398] Shintaro Mochizuki v Gabriel Decamps [368] | 3-6,5-7 | |
| ITF M25 La Nucía | 06/02 12:35 | 26 | Daniel Rincon v Gabriel Decamps | 7-6,6-3 | |
| ITF M25 La Nucía | 06/01 14:40 | 25 | Pol Amoros Ramos v Gabriel Decamps | 0-6,0-6 | |
| Challenger de Shymkent | 05/18 06:20 | 26 | [384] Gabriel Decamps v Illya Marchenko [252] | 1-6,1-6 | |
| Challenger de Shymkent | 05/16 10:10 | 25 | [350] Mikael Torpegaard v Gabriel Decamps [384] | 2-6,4-6 | |
| Challenger de Shymkent | 05/09 08:05 | 25 | [381] Gabriel Decamps v Illya Marchenko [254] | 3-6,1-6 | |
| Challenger de Shymkent | 05/08 04:00 | 14 | Gabriel Decamps v Savriyan Danilov | Cancelled | |
| Challenger de Aix-en-Provence | 05/01 14:10 | 14 | [415] Martin Cuevas v Gabriel Decamps [376] | 6-0,6-3 | |
| Challenger de Aguascalientes | 04/17 18:30 | 14 | [455] Matias Zukas v Gabriel Decamps [373] | 6-1,6-3 | |
| Challenger de San Luis Potosí | 04/10 19:40 | 14 | [373] Gabriel Decamps v Elmar Ejupovic [450] | 3-6,6-7 | |
| Challenger de Sanremo | 04/04 08:00 | 19 | [373] Gabriel Decamps v Edoardo Lavagno [392] | 2-6,6-7 | |
| Challenger de Sanremo | 04/03 08:00 | 14 | Gabriel Decamps v Simon Carr | 7-5,7-5 | |
| Challenger de Biena | 03/20 09:00 | 14 | [418] Georgii Kravchenko v Gabriel Decamps [385] | Cancelled | |
| ITF M25 Loulé | 03/17 16:55 | 25 | Adria S Barrera v Gabriel Decamps | 7-5,6-2 | |
| ITF M25 Portimão | 03/11 11:30 | 27 | [260] Marius Copil v Gabriel Decamps [385] | 4-6,6-3,7-6 | |
| ITF M25 Portimão | 03/10 11:45 | 26 | [385] Gabriel Decamps v Michael Vrbensky [393] | 6-3,6-3 |
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.