| ITF M15 Cairo | 09/02 10:10 | 26 | Karim-Mohamed Maamoun v Makhlouf, Sherif | 6-2,6-2 | |
| ITF M15 Cairo | 09/01 08:00 | 25 | Karim-Mohamed Maamoun v Maikel De Boes | 6-4,6-4 | |
| ITF M15 Cairo | 08/04 09:10 | 25 | Karim-Mohamed Maamoun v Krainer, L. | 1-6,2-6 | |
| ITF M15 Cairo | 05/01 08:00 | 25 | Karim-Mohamed Maamoun v El Feky, Karim | Cancelled | |
| ITF M15 Cairo | 04/21 07:55 | 25 | [412] Karim-Mohamed Maamoun v Benjamin Winter Lopez [460] | 2-6,5-7 | |
| ITF M15 Cairo | 12/12 08:00 | 25 | Karim-Mohamed Maamoun v Maggioli, Emiliano | Cancelled | |
| ITF M15 Cairo | 12/04 08:00 | 27 | Karim-Mohamed Maamoun v Crepaldi, Erik | 6-7,4-6 | |
| ITF M15 Cairo | 12/03 09:00 | 26 | Karim-Mohamed Maamoun v Niels Visker | 7-5,3-6,6-3 | |
| ITF M15 Cairo | 12/02 10:40 | 25 | Karim-Mohamed Maamoun v El Midhawy, Adam | 6-3,6-3 | |
| ITF - M15 Sharm El Sheikh | 11/20 08:00 | 27 | Karim-Mohamed Maamoun v Bovy, Arnaud | Retired | |
| ITF - M15 Sharm El Sheikh | 11/19 08:00 | 26 | Karim-Mohamed Maamoun v Kelsey Stevenson | 6-3,6-1 | |
| ITF - M15 Sharm El Sheikh | 11/18 08:00 | 25 | Karim-Mohamed Maamoun v Shyla, Yaraslau | 6-2,6-4 | |
| ITF - M15 Sharm El Sheikh | 11/11 08:00 | 25 | Karim-Mohamed Maamoun v Christian Langmo | 4-6,3-6 | |
| ITF - M15 Sharm El Sheikh | 03/13 08:00 | 26 | Noskin, Egor v Karim-Mohamed Maamoun | Cancelled | |
| ITF - M15 Sharm El Sheikh | 03/11 08:00 | 25 | Mohd Adam Das, Shamirul Shahril v Karim-Mohamed Maamoun | 0-6,1-6 | |
| Coupe Davis | 03/07 16:00 | - | Ozolins, Karlis v Mohamed Maamoon | View | |
| Coupe Davis | 03/06 17:05 | 45 | Gulbis, Ernests v Mohamed Maamoon | 6-4,6-3 | |
| ITF - M15 Sharm El Sheikh | 03/01 08:00 | 29 | [391] Karim-Mohamed Maamoun v David Poljak [472] | 7-5,6-3 | |
| ITF - M15 Sharm El Sheikh | 02/29 08:00 | 28 | Karim-Mohamed Maamoun v Moritani, Soichiro | 6-4,6-4 | |
| ITF - M15 Sharm El Sheikh | 02/28 08:00 | 27 | Karim-Mohamed Maamoun v Tanuma, Ryota | 6-2,6-3 | |
| ITF - M15 Sharm El Sheikh | 02/27 08:00 | 26 | Karim-Mohamed Maamoun v Smits, Glenn | 6-1,6-2 | |
| ITF - M15 Sharm El Sheikh | 02/26 08:00 | 25 | Karim-Mohamed Maamoun v Uzhylovsky, Vladimir | 6-3,6-4 | |
| Challenger - Bengaluru | 02/10 11:15 | 24 | [365] Karim-Mohamed Maamoun v Frederico Ferreira Silva [193] | 1-6,6-3,0-6 | |
| Nonthaburi, Singles M-ITF-THA-01A | 02/05 08:15 | 25 | [355] Karim-Mohamed Maamoun v Pavlasek, Adam [393] | 6-3,3-6,6-7 | |
| Nonthaburi, Singles M-ITF-THA-01A | 02/01 04:30 | 28 | [352] Karim-Mohamed Maamoun v Khumoyun Sultanov [330] | 1-6,2-6 | |
| Nonthaburi, Singles M-ITF-THA-01A | 01/31 02:30 | 27 | Karim-Mohamed Maamoun v Denis Yevseyev | Retired | |
| Nonthaburi, Singles M-ITF-THA-01A | 01/30 02:30 | 26 | Karim-Mohamed Maamoun v Patael, Ben | 7-5,6-3 | |
| Nonthaburi, Singles M-ITF-THA-01A | 01/29 02:30 | 25 | Wattanakul, Pol v Karim-Mohamed Maamoun | 0-6,4-6 | |
| Challenger Rennes | 01/22 09:00 | 25 | [222] Moraing, Mats v Karim-Mohamed Maamoun [352] | 6-4,6-3 | |
| Challenger Rennes | 01/20 14:30 | 24 | [352] Karim-Mohamed Maamoun v Jurij Rodionov [331] | 7-6,6-3 |
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.