| ITF W100 Bonita Springs | 04/30 14:30 | 54 | Maria Kozyreva v Martina Okalova | 2-6,7-6,4-6 | |
| ITF W100 Bonita Springs | 04/29 19:55 | 54 | Maria Kozyreva v Zoe Hitt | 6-0,6-0 | |
| ITF W75 Charlottesville | 04/22 21:00 | 54 | Maria Kozyreva v Mia Yamakita | 6-4,4-6,3-6 | |
| ITF W35 Boca Raton | 04/11 16:15 | 26 | [346] Maria Kozyreva v Katrina Scott [485] | 3-6,3-6 | |
| ITF W35 Boca Raton | 04/10 18:05 | 25 | [212] Elvina Kalieva v Maria Kozyreva [346] | 3-6,4-6 | |
| ITF W75 Florianopolis | 04/02 13:10 | 25 | Noelia Zeballos v Maria Kozyreva | 3-6,7-6,6-2 | |
| ITF W50 Sao Paulo | 03/31 14:00 | 29 | [386] Miriana Tona v Maria Kozyreva [435] | 7-5,0-6,3-6 | |
| ITF W50 Sao Paulo | 03/30 21:00 | 28 | [369] Daria Lodikova v Maria Kozyreva [435] | 4-6,3-6 | |
| ITF W50 Sao Paulo | 03/30 16:20 | 27 | Maria Kozyreva v Ekaterina Makarova | Retired | |
| ITF W50 Sao Paulo | 03/29 18:25 | 26 | [298] Giorgia Pedone v Maria Kozyreva [435] | 6-1,3-6,3-6 | |
| ITF W50 Sao Paulo | 03/27 13:00 | 25 | [491] Naiktha Bains v Maria Kozyreva [435] | 1-6,7-6,2-6 | |
| ITF W35 Spring | 02/28 19:55 | 25 | [426] Maria Kozyreva v Victoria Hu [311] | 6-7,6-4,3-6 | |
| ITF W35 Wesley Chapel | 02/06 17:25 | 25 | [385] Sayaka Ishii v Maria Kozyreva [422] | 6-4,6-2 | |
| ITF W75 Vero Beach | 01/27 17:30 | 28 | [196] Maria Kozyreva v Maria Lourdes Carle [185] | 7-5,4-6,5-7 | |
| ITF W75 Vero Beach | 01/26 15:50 | 27 | Tatiana Pieri v Maria Kozyreva | 3-6,2-6 | |
| ITF W75 Vero Beach | 01/25 21:20 | 26 | [196] Maria Kozyreva v Sachia Vickery [137] | 6-3,6-3 | |
| ITF W75 Vero Beach | 01/24 15:50 | 25 | [363] Allie Kiick v Maria Kozyreva [196] | 6-2,6-7,2-6 | |
| ITF W75 Vero Beach | 01/23 17:20 | 54 | [430] Ziva Falkner v Maria Kozyreva [196] | 2-6,2-6 | |
| ITF W75 Vero Beach | 01/22 21:00 | 54 | Jessica Pieri v Maria Kozyreva | 3-6,5-7 | |
| ITF W35 Naples | 01/18 14:55 | 26 | [196] Maria Kozyreva v Louisa Chirico [258] | 5-7,6-7 | |
| ITF W35 Naples | 01/16 19:10 | 25 | [196] Maria Kozyreva v Anna Rogers [193] | 7-5,6-2 | |
| ITF W35 Naples | 01/11 18:00 | 26 | [198] Maria Kozyreva v Clervie Ngounoue [492] | 2-6,3-6 | |
| ITF W35 Naples | 01/10 15:00 | 25 | [390] Gabriela Lee v Maria Kozyreva [198] | 3-6,6-2,5-7 | |
| ITF W25 Austin | 11/14 19:50 | 25 | [479] Maria Kozyreva v Madison Sieg [369] | 2-6,0-6 | |
| ITF W100 Charleston | 11/08 15:00 | 25 | [131] Hailey Baptiste v Maria Kozyreva [498] | 7-6,1-6,6-4 | |
| ITF W100 Charleston | 11/07 17:30 | 54 | [498] Maria Kozyreva v Anna Rogers [195] | 6-2,6-3 | |
| ITF W100 Charleston | 11/06 18:50 | 54 | Maria Kozyreva v Maria C F Turchetto | 6-3,6-4 | |
| ITF W80 Tyler | 10/27 19:20 | 27 | [171] Maria Kozyreva v Kayla Day [94] | 4-6,4-6 | |
| ITF W80 Tyler | 10/27 00:25 | 26 | [445] Jessica Failla v Maria Kozyreva [171] | 4-6,6-2,10-12 | |
| ITF W80 Tyler | 10/25 14:50 | 25 | [171] Maria Kozyreva v Gabriela Lee [445] | 6-1,3-6,6-4 |
Maria Alexandrovna Kozyreva (born 22 May 1999) is a Russian tennis player.
Kozyreva has a career-high singles ranking by the WTA of 422, achieved on 5 February 2024. She also has a career-high WTA doubles ranking of 167, reached on 16 October 2023.
Kozyreva won her first major ITF title at the 2022 Tyler Pro Challenge, in the doubles draw, partnering Ashley Lahey.