| 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 | |
| Challenger Calgary | 11/09 17:00 | 26 | Enzo Wallart v Maks Kasnikowski | 7-6,7-6 | |
| Challenger Calgary | 11/08 02:15 | 25 | [288] Maks Kasnikowski v Benoit Paire [124] | 6-3,6-7,6-3 | |
| Challenger Ortisei | 10/29 10:00 | 29 | [181] Lukas Klein v Maks Kasnikowski [310] | 6-7,7-6,7-6 | |
| Challenger Ortisei | 10/28 12:45 | 28 | [213] Federico Gaio v Maks Kasnikowski [310] | 3-6,7-5,2-6 | |
| Challenger Ortisei | 10/27 11:20 | 27 | [255] Mathias Bourgue v Maks Kasnikowski [310] | 6-7,3-6 | |
| Challenger Ortisei | 10/25 09:30 | 26 | [268] Michael Geerts v Maks Kasnikowski [310] | 7-5,3-6,6-7 | |
| Challenger Ortisei | 10/23 15:25 | 25 | [310] Maks Kasnikowski v Gauthier Onclin [216] | 6-1,6-4 | |
| Challenger Olbia | 10/16 08:00 | 19 | [308] Maks Kasnikowski v Vladyslav Orlov [464] | 6-4,6-7,4-6 | |
| Challenger Olbia | 10/15 08:00 | 14 | Maks Kasnikowski v N. Vijay Sundar Prashanth | 6-3,6-4 | |
| Challenger Mouilleron le Captif | 10/01 16:00 | 14 | [308] Maks Kasnikowski v Evgeny Karlovskiy [473] | 6-7,7-6,4-6 | |
| Challenger Bad Waltersdorf | 09/19 08:00 | 25 | [307] Maks Kasnikowski v Francesco Passaro [189] | 6-0,5-7,1-6 | |
| Challenger Bad Waltersdorf | 09/18 09:25 | 19 | [307] Maks Kasnikowski v Petr Nouza [96] | 6-3,3-6,3-6 | |
| Challenger Bad Waltersdorf | 09/17 12:30 | 14 | Maks Kasnikowski v Syl Gaxherri | 6-1,7-5 | |
| Challenger Szczecin | 09/14 13:45 | 26 | [311] Maks Kasnikowski v Jaume Munar [85] | 4-6,3-6 | |
| Challenger Szczecin | 09/12 17:00 | 25 | [247] Jelle Sels v Maks Kasnikowski [311] | Retired | |
| Challenger Tulln | 09/04 08:00 | 19 | Maks Kasnikowski v Jeremy Jahn | 1-6,4-6 | |
| Challenger Tulln | 09/03 08:00 | 14 | Maks Kasnikowski v Paul Werren | 6-1,6-3 | |
| ITF M25 Poznan | 08/24 09:00 | 26 | [314] Maks Kasnikowski v Kai Wehnelt [177] | 4-6,4-6 | |
| ITF M25 Poznan | 08/23 08:30 | 25 | Maks Kasnikowski v Lukas Palovic | 6-3,6-2 | |
| Challenger Grodzisk Mazowiecki | 08/17 12:45 | 27 | [183] Jesper De Jong v Maks Kasnikowski [329] | 6-0,6-2 | |
| Challenger Grodzisk Mazowiecki | 08/16 11:40 | 26 | [351] Peter Gojowczyk v Maks Kasnikowski [329] | 3-6,4-6 | |
| Challenger Grodzisk Mazowiecki | 08/15 09:00 | 25 | [329] Maks Kasnikowski v Stefanos Sakellaridis [465] | 6-2,6-0 | |
| Challenger Grodzisk Mazowiecki | 08/15 08:00 | 25 | Maks Kasnikowski v Zdenek Kolar | Cancelled | |
| Challenger Liberec | 08/02 09:30 | 25 | [308] Maks Kasnikowski v Dalibor Svrcina [170] | 6-3,6-7,3-6 | |
| Challenger Tampere | 07/18 07:30 | 25 | [303] Maks Kasnikowski v Riccardo Bonadio [189] | 4-6,0-6 | |
| Challenger Modena | 06/29 18:15 | 27 | [309] Maks Kasnikowski v Titouan Droguet [261] | 1-6,5-7 | |
| Challenger Modena | 06/28 12:15 | 26 | [221] Stefano Travaglia v Maks Kasnikowski [309] | 2-6,6-7 | |
| Challenger Modena | 06/27 09:30 | 25 | Gilles Arnaud Bailly v Maks Kasnikowski | 4-6,5-7 |
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.