| ITF M15 Sozopol | 10/14 07:00 | 27 | [314] Alexandar Lazarov v Alexander Donski [252] | 6-7,6-3,6-4 | |
| ITF M15 Sozopol | 10/13 07:00 | 26 | Alexandar Lazarov v Dominik Kellovsky | 6-3,6-4 | |
| ITF M15 Sozopol | 10/11 09:30 | 25 | Alexandar Lazarov v Adriano Dzhenev | 6-4,6-4 | |
| ATP Sofía | 09/28 17:10 | 26 | [334] Alexandar Lazarov v Lorenzo Musetti [30] | 7-6,6-7,2-6 | |
| ATP Sofía | 09/26 15:00 | 25 | [74] Jiri Lehecka v Alexandar Lazarov [334] | 5-7,3-6 | |
| Copa Davis | 09/18 09:00 | 5 | Alexandar Lazarov v Lleyton Cronje | Cancelled | |
| Copa Davis | 09/16 13:20 | 2 | Alexandar Lazarov v Philip Henning | 6-0,6-1 | |
| Challenger de Mallorca | 09/03 15:30 | 28 | [394] Alexandar Lazarov v Luca Nardi [175] | 7-6,3-6,1-6 | |
| Challenger de Mallorca | 09/02 16:55 | 27 | [214] Mikhail Kukushkin v Alexandar Lazarov [394] | 7-6,4-6,6-7 | |
| Challenger de Mallorca | 09/01 14:00 | 26 | [394] Alexandar Lazarov v Aleksandar Vukic [132] | 6-3,4-6,6-4 | |
| Challenger de Mallorca | 08/31 14:00 | 25 | [259] Hamad Medjedovic v Alexandar Lazarov [394] | 1-6,3-6 | |
| Challenger de Mallorca | 08/30 08:00 | 19 | [394] Alexandar Lazarov v Alberto Barroso Campos [396] | 6-4,0-6,6-3 | |
| Challenger de Mallorca | 08/29 08:00 | 14 | Alexandar Lazarov v Robert Strombachs | 6-3,6-4 | |
| Challenger de Banja Luka | 08/22 12:35 | 19 | [312] Kimmer Coppejans v Alexandar Lazarov [391] | 7-6,6-4 | |
| Challenger de Banja Luka | 08/21 14:50 | 14 | [143] Arjun Kadhe v Alexandar Lazarov [389] | 3-6,2-6 | |
| ITF M25 Pitesti | 08/05 07:00 | 27 | Alexandar Lazarov v Ilya Snitari | 7-6,1-6,2-6 | |
| ITF M25 Pitesti | 08/04 09:20 | 26 | Alexandar Lazarov v Vasile Antonescu | 6-1,6-2 | |
| ITF M25 Pitesti | 08/03 11:45 | 25 | Alexandar Lazarov v Vlad Cristian Breazu | 4-6,6-1,6-2 | |
| ITF M25 Tbilisi | 07/30 11:00 | 29 | Alexandar Lazarov v Savva Polukhin | 2-6,4-6 | |
| ITF M25 Tbilisi | 07/29 07:00 | 28 | Evgeny Philippov v Alexandar Lazarov | 0-6,6-4,2-6 | |
| ITF M25 Tbilisi | 07/28 07:00 | 27 | [373] Alexandar Lazarov v Yanki Erel [450] | 6-4,7-5 | |
| ITF M25 Tbilisi | 07/27 08:00 | 26 | [373] Alexandar Lazarov v Ivan Liutarevich [304] | 6-3,3-6,6-2 | |
| ITF M25 Tbilisi | 07/26 11:40 | 25 | Alexandar Lazarov v Saba Purtseladze | 7-6,6-2 | |
| ITF M15 Sofía | 07/10 07:00 | 29 | Alexandar Lazarov v Vlad Andrei Dancu | 6-1,6-2 | |
| ITF M15 Sofía | 07/09 13:00 | 28 | Alexandar Lazarov v Lucas Bouquet | 6-1,4-6,6-3 | |
| ITF M15 Sofía | 07/08 08:05 | 27 | Alexandar Lazarov v Juan Ignacio Galarza | 6-3,6-2 | |
| ITF M15 Sofía | 07/07 10:40 | 26 | Alexandar Lazarov v Samuil Konov | 6-2,4-6,6-1 | |
| ITF M15 Sofía | 07/06 10:50 | 25 | Alexandar Lazarov v Simeon Terziev | 6-3,6-3 | |
| Challenger de Oeiras | 06/21 12:35 | 25 | [380] Alexandar Lazarov v Nikolas S Izquierdo [279] | 6-2,2-6,4-6 | |
| Challenger de Oeiras | 06/20 13:35 | 19 | [361] Ivan Gakhov v Alexandar Lazarov [380] | 1-6,7-6,6-7 |
Alexandar Lazarov (Bulgarian: Александър Лазаров, born 6 November 1997) is a Bulgarian professional tennis player. His highest singles ranking is No. 272 achieved on 14 November 2022, whilst his best doubles ranking is No. 359 achieved on 3 February 2020.