| Challenger Mestre | 05/23 10:15 | 25 | Karim-Mohamed Maamoun v Cem Ilkel | 1-6,4-6 | |
| Challenger Samarkand | 05/17 05:00 | 26 | Nikola Milojevic v Karim-Mohamed Maamoun | 4-6,7-5,7-5 | |
| Challenger Samarkand | 05/16 05:00 | 25 | Sanjar Fayziev v Karim-Mohamed Maamoun | 1-6,3-6 | |
| Challenger Karshi | 05/10 05:30 | 26 | Sergiy Stakhovsky v Karim-Mohamed Maamoun | 6-4,7-6 | |
| Challenger Karshi | 05/08 09:35 | 25 | Karim-Mohamed Maamoun v Dzmitry Zhyrmont | 6-2,7-6 | |
| Challenger Anning Qual | 04/24 02:00 | 54 | Karim-Mohamed Maamoun v Prajnesh Gunneswaran | 3-6,4-6 | |
| Challenger Anning Qual | 04/23 04:25 | 46 | Karim-Mohamed Maamoun v Zhizhen Zhang | 2-6,7-5,7-5 | |
| Challenger Qingdao | 04/18 02:00 | 25 | [273] Karim-M Maamoun v Thomas Fabbiano [167] | 3-6,1-6 | |
| ITF Egypt F11 | 04/02 08:00 | 29 | Karim-Mohamed Maamoun v Marek Gengel | 6-4,3-6,6-4 | |
| ITF Egypt F11 | 04/01 08:00 | 28 | Karim-Mohamed Maamoun v Thomas Brechemier | 6-3,4-6,6-4 | |
| ITF Egypt F11 | 03/31 08:00 | 27 | Karim-Mohamed Maamoun v Charly Zick | 6-3,6-1 | |
| ITF Egypt F11 | 03/30 11:00 | 26 | Karim-Mohamed Maamoun v Ryan James Storrie | 6-4,6-1 | |
| ITF Egypt F11 | 03/29 08:00 | 25 | Karim-Mohamed Maamoun v Oleg Khotkov | 7-5,7-6 | |
| ITF Egypt F10 | 03/26 08:00 | 29 | Karim-M Maamoun v Marek Gengel | 6-4,6-2 | |
| ITF Egypt F10 | 03/25 08:00 | 28 | Karim-Mohamed Maamoun v Youssef Hossam | 6-3,6-3 | |
| ITF Egypt F10 | 03/24 08:00 | 27 | Karim-Mohamed Maamoun v Artem Smirnov | 6-4,6-0 | |
| ITF Egypt F10 | 03/23 09:45 | 26 | Karim-M Maamoun v Wilfredo Gonzalez | 6-3,7-6 | |
| ITF Egypt F10 | 03/22 08:00 | 25 | Karim-M Maamoun v Klim Ivanov | 6-0,6-0 | |
| ITF Egypt F7 | 03/05 08:00 | 29 | Alex Molcan v Karim-Mohamed Maamoun | 0-6,3-6 | |
| ITF Egypt F7 | 03/04 08:00 | 28 | Ugo Humbert v Karim-Mohamed Maamoun | 2-6,6-3,3-6 | |
| ITF Egypt F7 | 03/03 08:00 | 27 | Nicolaas Scholtz v Karim-Mohamed Maamoun | 5-7,4-6 | |
| ITF Egypt F7 | 03/02 08:00 | 26 | David Poljak v Karim-Mohamed Maamoun | 6-7,5-7 | |
| ITF Egypt F7 | 03/01 12:40 | 25 | Denis Klok v Karim-Mohamed Maamoun | 0-6,1-6 | |
| ITF Egypt F6 | 02/22 09:35 | 25 | Karim-Mohamed Maamoun v Youssef Hossam | 4-6,6-1,2-6 | |
| ITF Egypt F5 | 02/19 08:00 | 29 | Artem Smirnov v Karim-Mohamed Maamoun | 4-6,2-6 | |
| ITF Egypt F5 | 02/18 08:00 | 28 | Karim-Mohamed Maamoun v Gleb Sakharov | 6-2,6-1 | |
| ITF Egypt F5 | 02/17 08:00 | 27 | Frederico Ferreira Silva v Karim-Mohamed Maamoun | 4-6,1-6 | |
| ITF Egypt F5 | 02/16 09:00 | 26 | Youssef Hossam v Karim-Mohamed Maamoun | 3-6,2-6 | |
| ITF Egypt F5 | 02/15 08:00 | 25 | Marek Gengel v Karim-Mohamed Maamoun | 4-6,2-6 | |
| ITF Egypt F3 | 02/05 08:00 | 29 | Aldin Setkic v Karim-Mohamed Maamoun | 2-6,6-7 |
Karim-Mohamed Maamoun (born 9 April 1991 in Cairo) is an Egyptian tennis player. Maamoun has a career high ATP singles ranking of 225 achieved on 2 October 2017. Maamoun has represented Egypt at the Davis Cup where he has a W/L record of 17–9.