| ITF M15 Sozopol | 10/06 10:45 | 26 | Valentin Vanta v Maks Kasnikowski | 3-6,4-6 | |
| ITF M15 Sozopol | 10/05 07:00 | 25 | Gabriele Moghini v Maks Kasnikowski | 0-6,1-6 | |
| Challenger Sibiu | 09/19 08:00 | 19 | Steven Diez v Maks Kasnikowski | 5-7,7-5,6-3 | |
| Challenger Sibiu | 09/18 10:10 | 14 | Marc Popescu v Maks Kasnikowski | 0-6,0-6 | |
| Challenger Szczecin | 09/13 17:45 | 25 | [500] Maks Kasnikowski v Flavio Cobolli [152] | 6-3,3-6,2-6 | |
| ITF M15 Celje | 08/25 12:30 | 26 | Domagoj Biljesko v Maks Kasnikowski | 6-1,6-2 | |
| ITF M15 Celje | 08/24 08:15 | 25 | Jan Dimitrijevic v Maks Kasnikowski | 2-6,2-6 | |
| Challenger Grodzisk Mazowiecki | 08/18 16:00 | 26 | Maks Kasnikowski v Skander Mansouri | 4-6,4-6 | |
| Challenger Grodzisk Mazowiecki | 08/16 11:15 | 25 | Nicolas Alvarez Varona v Maks Kasnikowski | 5-7,3-6 | |
| ITF M15 Parnu | 08/07 11:00 | 29 | Maks Kasnikowski v Fermin Tenti | 5-7,6-3,5-7 | |
| ITF M15 Parnu | 08/06 12:00 | 28 | Maks Kasnikowski v Kristjan Tamm | 7-6,6-2 | |
| ITF M15 Parnu | 08/05 12:10 | 27 | Maks Kasnikowski v William Grant | 6-1,6-4 | |
| ITF M15 Parnu | 08/04 09:35 | 26 | Maks Kasnikowski v Federico Campana | 6-2,6-2 | |
| ITF M15 Parnu | 08/03 07:15 | 25 | Maks Kasnikowski v Andrea Gola | 6-3,6-0 | |
| ITF M15 Lodz | 07/31 08:00 | 29 | Maks Kasnikowski v Pawel Cias | 4-6,6-7 | |
| ITF M15 Lodz | 07/30 07:50 | 28 | Petr Nouza v Maks Kasnikowski | 0-6,6-7 | |
| ITF M15 Lodz | 07/29 09:55 | 27 | Maks Kasnikowski v William Grant | 7-5,6-0 | |
| ITF M15 Lodz | 07/28 08:00 | 26 | Maks Kasnikowski v Gabriel Matuszewski | 6-1,6-2 | |
| ITF M15 Lodz | 07/27 09:30 | 25 | Maks Kasnikowski v Adam Majchrzak | 6-4,6-0 | |
| ITF M15 Wroclaw | 07/03 09:00 | 29 | Petr Nouza v Maks Kasnikowski | 4-6,6-3,4-6 | |
| ITF M15 Wroclaw | 07/02 11:15 | 28 | Maciej Rajski v Maks Kasnikowski | 3-6,2-6 | |
| ITF M15 Wroclaw | 07/01 12:25 | 27 | Maks Kasnikowski v Yann Wojcik | 6-2,6-2 | |
| ITF M15 Wroclaw | 06/30 17:00 | 26 | Maks Kasnikowski v Jerzy Janowicz | 6-3,3-6,6-2 | |
| ITF M15 Wroclaw | 06/29 15:15 | 25 | Maks Kasnikowski v Michal Mikula | 6-1,4-6,6-2 | |
| Challenger Poznan | 05/31 09:50 | 25 | Maks Kasnikowski v Camilo Ugo Carabelli | 7-5,4-6,1-6 | |
| Challenger Poznan | 05/30 11:25 | 19 | Rudolf Molleker v Maks Kasnikowski | 4-6,0-6 | |
| Challenger Poznan | 05/29 14:30 | 14 | Maks Kasnikowski v Henri Squire | Retired | |
| ITF M15 Antalya | 05/17 12:50 | 25 | Maks Kasnikowski v Max Houkes | 3-6,3-6 | |
| ITF M15 Antalya | 05/10 11:30 | 25 | Maks Kasnikowski v Nicolae Frunza | 4-6,7-5,4-6 | |
| ITF M15 Shymkent | 04/28 07:55 | 26 | Maks Kasnikowski v Andrea Gola | 6-7,6-3,6-7 |
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.