| Sofia, Bulgaria | 11/07 16:10 | 25 | Lazarov, Alexandar v Pavel Kotov | 6-3,1-6,2-6 | |
| Mauthausen, Austria | 05/09 08:00 | 25 | [469] Sandro Kopp v Lazarov, Alexandar [284] | Retired | |
| Challenger Prague | 04/30 08:00 | 14 | [307] Rudolf Molleker v Lazarov, Alexandar [287] | 7-5,4-6,7-6 | |
| Challenger - Oeiras | 04/18 14:40 | 25 | [46] Adrian Mannarino v Lazarov, Alexandar [284] | 5-7,7-5,6-2 | |
| Challenger - Split | 04/10 09:30 | 19 | [157] Elias Ymer v Lazarov, Alexandar [281] | 6-4,6-4 | |
| Challenger - Split | 04/09 11:40 | 14 | [313] Nikola Milojevic v Lazarov, Alexandar [281] | 3-6,2-6 | |
| ATP - Marrakech | 04/02 12:10 | 14 | [285] Lazarov, Alexandar v Andrea Vavassori [202] | 6-7,3-6 | |
| Challenger Biel | 03/22 10:00 | 25 | Kirill Kivattsev v Lazarov, Alexandar | 6-4,6-7,6-3 | |
| ATP - Dubaï | 02/28 13:05 | 25 | [46] Alexander Bublik v Lazarov, Alexandar [301] | Retired | |
| ATP - Dubaï | 02/26 07:00 | 19 | [304] Lazarov, Alexandar v Francesco Passaro [109] | 7-5,7-5 | |
| ATP - Dubaï | 02/25 09:15 | 14 | [92] Zhizhen Zhang v Lazarov, Alexandar [304] | 1-6,6-7 | |
| Coupe Davis | 02/05 07:10 | - | Rubin Statham v Lazarov, Alexandar | Cancelled | |
| Coupe Davis | 02/03 22:45 | - | [456] Ajeet Rai v Lazarov, Alexandar [301] | 6-7,2-6 | |
| ATP - Auckland | 01/07 01:35 | 14 | [297] Lazarov, Alexandar v Gregoire Barrere [90] | 1-6,4-6 | |
| Challenger Maia | 12/01 11:00 | 26 | [303] Lazarov, Alexandar v Luca Van Assche [176] | 3-6,4-6 | |
| Challenger Maia | 11/29 13:55 | 25 | [303] Lazarov, Alexandar v Alessandro Giannessi [267] | 6-3,6-4 | |
| Challenger Maia | 11/28 11:00 | 19 | Lazarov, Alexandar v Henrique Rocha | 7-5,6-4 | |
| Challenger Maia | 11/27 12:30 | 14 | Lazarov, Alexandar v Kilian Feldbausch | 6-1,7-6 | |
| Challenger Andria | 11/21 15:00 | 25 | [277] Lazarov, Alexandar v Vitaliy Sachko [323] | 6-3,3-6,2-6 | |
| Roanne, France | 11/08 19:45 | 25 | [278] Lazarov, Alexandar v Hugo Gaston [132] | Retired | |
| Roanne, France | 11/07 10:00 | 19 | [278] Lazarov, Alexandar v Mark Lajal [447] | 6-2,3-6,6-0 | |
| Roanne, France | 11/06 10:30 | 14 | [275] Lazarov, Alexandar v Elliot Benchetrit [401] | 6-4,6-1 | |
| Bergamo, Italy | 10/30 09:00 | 14 | [101] Jason Kubler v Lazarov, Alexandar [289] | 6-4,7-6 | |
| ITF M15 Sozopol | 10/23 07:00 | 29 | Lazarov, Alexandar v Maks Kasnikowski | 6-2,6-4 | |
| ITF M15 Sozopol | 10/22 07:00 | 28 | [317] Lazarov, Alexandar v Alexander Donski [256] | 6-1,6-4 | |
| ITF M15 Sozopol | 10/21 08:50 | 27 | Lazarov, Alexandar v Valentin Vanta | 6-3,6-1 | |
| ITF M15 Sozopol | 10/20 13:30 | 26 | Lazarov, Alexandar v Jasza Szajrych | 6-3,6-1 | |
| ITF M15 Sozopol | 10/19 10:55 | 25 | Lazarov, Alexandar v Vlad Andrei Dancu | 6-1,6-2 | |
| ITF M15 Sozopol | 10/16 10:00 | 29 | [314] Lazarov, Alexandar v Vladyslav Orlov [464] | 6-1,6-1 | |
| ITF M15 Sozopol | 10/15 14:00 | 28 | Lazarov, Alexandar v Maks Kasnikowski | 6-7,6-2,6-2 |
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.