| 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 | |
| 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 |
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.