| Challenger Ostrava | 04/23 10:25 | 25 | [249] Maks Kasnikowski v Jakub Nicod [351] | 6-1,6-7,1-6 | |
| Challenger Oeiras | 04/16 12:35 | 25 | [398] Gastao Elias v Maks Kasnikowski [245] | Retired | |
| Challenger Oeiras | 04/15 09:30 | 19 | [245] Maks Kasnikowski v Gauthier Onclin [269] | 6-7,3-6 | |
| Challenger Oeiras | 04/14 11:35 | 14 | Maks Kasnikowski v Pedro Araujo | 6-7,6-3,6-3 | |
| Challenger Split | 04/11 09:00 | 26 | [253] Maks Kasnikowski v Matej Dodig [420] | 4-6,4-6 | |
| Challenger Split | 04/09 10:00 | 25 | [253] Maks Kasnikowski v Zdenek Kolar [226] | 6-1,6-2 | |
| Challenger Barletta | 04/05 09:00 | 27 | [129] Harold Mayot v Maks Kasnikowski [260] | 7-5,6-3 | |
| Challenger Barletta | 04/03 12:30 | 26 | [260] Maks Kasnikowski v Franco Agamenone [196] | 6-4,7-6 | |
| Challenger Barletta | 04/01 13:30 | 25 | [260] Maks Kasnikowski v Giovanni Oradini [369] | 6-4,7-5 | |
| Challenger Hamburg | 03/11 17:30 | 25 | [258] Maks Kasnikowski v Alexander Blockx [307] | 4-6,6-7 | |
| Challenger New Delhi | 02/27 09:40 | 25 | [194] Dane Sweeny v Maks Kasnikowski [267] | 6-7,7-5,6-3 | |
| Challenger Pune | 02/22 07:25 | 26 | [267] Maks Kasnikowski v Dane Sweeny [194] | 4-6,1-6 | |
| Challenger Pune | 02/20 05:45 | 25 | [221] Seongchan Hong v Maks Kasnikowski [267] | 4-6,2-6 | |
| Challenger Bengaluru | 02/16 06:30 | 27 | [267] Maks Kasnikowski v Oriol Roca Batalla [209] | 6-7,6-4,5-7 | |
| Challenger Bengaluru | 02/14 07:10 | 26 | [126] Benjamin Bonzi v Maks Kasnikowski [267] | 3-6,4-6 | |
| Challenger Bengaluru | 02/13 05:30 | 25 | [267] Maks Kasnikowski v Tung-Lin Wu [235] | 7-5,6-2 | |
| Challenger Chennai | 02/06 12:25 | 25 | [271] Maks Kasnikowski v Mukund Sasikumar [486] | 3-6,6-4,5-7 | |
| Davis Cup | 02/03 11:25 | 5 | Sergey Fomin v Maks Kasnikowski | Cancelled | |
| Davis Cup | 02/02 10:40 | 2 | [330] Khumoyun Sultanov v Maks Kasnikowski [271] | 3-6,1-6 | |
| Challenger Ottignies | 01/24 12:50 | 25 | Kamil Majchrzak v Maks Kasnikowski | 6-4,4-6,6-3 | |
| Challenger Ottignies | 01/23 09:00 | 19 | [262] Mikhail Kukushkin v Maks Kasnikowski [273] | 6-2,5-7,3-6 | |
| Challenger Ottignies | 01/22 10:55 | 14 | [330] Charles Broom v Maks Kasnikowski [273] | 4-6,3-6 | |
| Challenger Oeiras | 01/10 15:20 | 26 | [279] Maks Kasnikowski v Valentin Royer [258] | 3-6,2-6 | |
| Challenger Oeiras | 01/09 17:45 | 25 | [273] Mathias Bourgue v Maks Kasnikowski [279] | 1-6,6-1,3-6 | |
| Challenger Oeiras | 01/07 11:00 | 29 | [336] Gastao Elias v Maks Kasnikowski [324] | 6-7,6-4,3-6 | |
| Challenger Oeiras | 01/06 13:20 | 28 | [276] Valentin Royer v Maks Kasnikowski [324] | 4-6,4-6 | |
| Challenger Oeiras | 01/05 17:20 | 27 | [324] Maks Kasnikowski v Joao Sousa [249] | 7-6,6-4 | |
| Challenger Oeiras | 01/03 15:00 | 26 | Maks Kasnikowski v Joao Domingues | 7-5,6-4 | |
| Challenger Oeiras | 01/01 15:15 | 25 | [265] Adrian Andreev v Maks Kasnikowski [324] | 6-3,6-7,3-6 | |
| Challenger Drummondville | 11/13 22:30 | 25 | [319] Maks Kasnikowski v Aziz Dougaz [233] | 4-6,6-3,5-7 |
Maks Kaśnikowski (born 6 July 2003) is a Polish tennis player.
Kaśnikowski has a career high ATP singles ranking of world No. 245 achieved on 15 April 2024. He also has a career high ATP doubles ranking of No. 688 achieved on 8 May 2023.
Kaśnikowski represents Poland at the Davis Cup, where he has a W/L record of 2–1.
In October, he reached his first Challenger final in Ortisei, Italy and moved into a new career high in the top 290 in the rankings, that he first reached on 3 July 2023.
He won his first Challenger title at the 2024 Oeiras Indoors, saving six match points in the opening round against Adrian Andreev, becoming the second-youngest Polish champion in history to win a title. Only a 19-year-old Jerzy Janowicz was younger when he won his title in St. Remy, France in 2010.