| Nigeria F5, Singles | 10/18 10:30 | 26 | Meda, Joel v Karim-Mohamed Maamoun | 2-6,2-6 | |
| Nigeria F5, Singles | 10/16 12:20 | 25 | Sabanov, Matej v Karim-Mohamed Maamoun | 4-6,4-6 | |
| Nigeria F5, Singles | 10/16 10:30 | - | Sabanov, Matej v Karim-Mohamed Maamoun | 4-6,4-5 | |
| ITF Nigeria F4 | 10/09 09:00 | 25 | Karim-Mohamed Maamoun v Fransen, Stephan | 2-6,2-6 | |
| Izmir, Turkey | 09/21 11:10 | 26 | Karim-Mohamed Maamoun v Nedovyesov, Aleksandr | 2-6,6-4,1-6 | |
| Izmir, Turkey | 09/19 10:40 | 25 | Jaziri, Malek v Karim-Mohamed Maamoun | 6-7,4-6 | |
| Istanbul, Turkey | 09/16 11:40 | 28 | Jaziri, Malek v Karim-Mohamed Maamoun | 6-2,4-6,6-1 | |
| Istanbul, Turkey | 09/15 09:00 | 27 | Altug Celikbilek v Karim-Mohamed Maamoun | 2-6,4-6 | |
| Istanbul, Turkey | 09/13 08:00 | 26 | Karim-Mohamed Maamoun v Ignatik, Uladzimir | 6-3,3-6,6-2 | |
| Istanbul, Turkey | 09/11 09:00 | 25 | Ortega-Olmedo, Roberto v Karim-Mohamed Maamoun | 4-6,3-6 | |
| Challenger Alphen | 09/05 11:45 | 25 | Karim-Mohamed Maamoun v Maden, Yannick | 0-6,2-6 | |
| Challenger Meerbusch | 08/19 11:00 | 28 | Haider-Maurer, Andreas v Karim-Mohamed Maamoun | 6-4,6-7,6-3 | |
| Challenger Meerbusch | 08/18 11:30 | 27 | Karim-Mohamed Maamoun v Jahn, Jeremy | 3-6,6-2,6-4 | |
| Challenger Meerbusch | 08/17 11:00 | 26 | Sieber, Marc v Karim-Mohamed Maamoun | 2-6,3-6 | |
| Challenger Meerbusch | 08/15 15:15 | 25 | Karim-Mohamed Maamoun v Mertens, Yannick | 6-3,6-2 | |
| Segovia, Spain | 08/03 14:30 | 26 | [217] Alex De Minaur v Maamoun, Karim-Mohamed [283] | 6-2,7-6 | |
| Segovia, Spain | 08/01 11:55 | 25 | Vega Hernandez, David v Karim-Mohamed Maamoun | 2-6,1-6 | |
| Challenger Cortina | 07/25 11:50 | 25 | [263] Christopher O'Connell v Maamoun, Karim-Mohamed [285] | Retired | |
| Coupe Davis | 07/22 14:00 | 28 | Karim-Mohamed Maamoun v Hounkpevi, Felix | 6-0,6-1 | |
| Coupe Davis | 07/21 14:00 | - | Chinamo, Tadiwa v Karim-Mohamed Maamoun | 0-6,1-6 | |
| Coupe Davis | 07/19 14:00 | - | Karim-Mohamed Maamoun v Etienne Niyigena | 6-0,6-0 | |
| Coupe Davis | 07/17 15:35 | - | Karim-Mohamed Maamoun v Sylvester Emmanuel | 6-0,6-3 | |
| ITF France F14 | 07/07 09:30 | 27 | Tatlot, Johan Sebastien v Karim-Mohamed Maamoun | 6-2,6-2 | |
| ITF France F14 | 07/05 09:30 | 26 | Pontico, Hugo v Karim-Mohamed Maamoun | 2-6,4-6 | |
| ITF France F14 | 07/04 10:40 | 25 | Antoine Bellier v Karim-Mohamed Maamoun | 6-4,1-6,4-6 | |
| ITF Spain F19 | 06/28 11:30 | 26 | Karim-Mohamed Maamoun v Gomez-Herrera, Carlos | 3-6,4-6 | |
| ITF Spain F19 | 06/27 17:00 | 25 | Karim-Mohamed Maamoun v Romero de Avila Senise, Alberto | 6-4,6-4 | |
| Fergana, Uzbekistan | 06/20 06:00 | 25 | Karim-Mohamed Maamoun v Shyla, Yaraslau | 6-7,6-3,3-6 | |
| ITF Turkey F23 | 06/15 07:00 | 26 | Dimitar Kuzmanov v Karim-Mohamed Maamoun | 6-3,6-4 | |
| ITF Turkey F23 | 06/14 11:00 | 25 | Yanki Erel v Karim-Mohamed Maamoun | 1-6,1-6 |
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.