| All Africa Team Championships | 02/15 15:00 | - | Koceila Mammeri v Victor Ikechukwu | L | 0-2 | |
| Thomas Cup | 05/10 07:00 | - | Jun Peng Zhao v Koceila Mammeri | L | 2-0 | |
| Korea Masters | 04/13 01:00 | 5 | Koceila Mammeri v Hong Yang Weng | L | 0-2 | |
| Korea Open | 04/06 01:20 | 5 | Kodai Naraoka v Koceila Mammeri | L | 2-0 | |
| Swiss Open Qual | 03/22 12:00 | - | Koceila Mammeri v Iikka Heino | L | 0-2 | |
| All Africa Team Championships | 02/17 06:20 | - | Melvin Appiah v Koceila Mammeri | W | 0-2 | |
| Orleans Masters Qual | 03/23 10:20 | 5 | Koceila Mammeri v David Kim | L | 0-2 | |
| All Africa Individual Championships | 02/14 16:00 | - | Ahmed Salah v Koceila Mammeri | W | 1-2 | |
| All Africa Individual Championships | 02/14 09:00 | - | Felix Bengono v Koceila Mammeri | W | 0-2 | |
| All Africa Team Championships | 02/10 09:00 | - | Koceila Mammeri v OUZAIER KHAYATI | W | 2-0 | |
| Italian Int. Qual | 12/12 12:25 | - | Koceila Mammeri v Arnaud Merkle | L | 0-2 | |
| Indonesia Masters XD | 05/23 13:30 | 1 | Vladimir Ivanov v Koceila Mammeri | L | 2-0 |
Koceila Julien Mammeri (born 23 February 1999) is a French-Algerian badminton player who trained at the Oullins club in France. In the junior event, he was the third place at the Portugal International tournament in the boys' doubles event. He won gold medals at the 2017, 2019, 2020, 2021 and 2022 African Championships for men's doubles with his partner Youcef Sabri Medel, and in 2018 and 2019 for mixed doubles with Linda Mazri, and also in 2021 and 2022 for mixed doubles with Tanina Mammeri. He claimed the mixed doubles gold medals at the 2019 African Games with Mazri and in 2023 with Tanina Mammeri. He also won another gold in the men's doubles in 2023 with Medel.