Australian Open 01/11 23:00 14 [191] August Holmgren v Sebastian Ofner [131] 4-6,4-6
Challenger Brest 10/22 18:30 26 [157] Giulio Zeppieri v August Holmgren [168] 6-3,6-2
Challenger Brest 10/20 14:00 25 [183] Kimmer Coppejans v August Holmgren [168] 2-6,3-6
ATP Almaty 10/11 09:05 14 [178] August Holmgren v Titouan Droguet [166] 6-7,6-7
Challenger Jinan 10/08 07:00 25 [485] Pavel Kotov v August Holmgren [178] 6-3,6-4
ATP Shanghai 10/01 06:10 23 [78] Jordan Thompson v August Holmgren [176] 4-6,6-3,6-4
ATP Shanghai 09/30 05:50 15 [192] Gauthier Onclin v August Holmgren [176] 4-6,6-7
ATP Shanghai 09/29 06:25 14 [176] August Holmgren v Chun Hsin Tseng [122] 4-6,7-5,6-3
Challenger Jingshan 09/24 04:20 25 [104] Nikoloz Basilashvili v August Holmgren [176] 6-2,6-3
Challenger Genoa 09/01 12:00 25 [172] August Holmgren v Thiago Agustin Tirante [115] 6-7,6-7
US Open 08/19 15:00 14 [173] August Holmgren v Zachary Svajda [143] 2-6,6-7
Challenger Chicago 08/09 19:15 28 [187] August Holmgren v Yu Hsiou Hsu [198] 6-7,6-3,6-7
Challenger Chicago 08/08 19:15 27 [187] August Holmgren v Levski Women [409] 6-4,6-4
Challenger Chicago 08/07 21:15 26 [144] August Holmgren v Antoine Ghibaudo [470] 6-4,6-4
Challenger Chicago 08/05 20:00 25 August Holmgren v Darian King 6-4,6-4
Challenger Lexington 07/28 21:00 25 [242] Nicolas Mejia v August Holmgren [144] Retired
Challenger Bloomfield Hills 07/24 20:50 26 [181] Mark Lajal v August Holmgren [146] 6-1,6-2
Challenger Bloomfield Hills 07/22 21:20 25 [344] Garrett Johns v August Holmgren [146] 1-6,4-6
Challenger Granby 07/20 19:25 29 [146] August Holmgren v Liam Draxl [121] 6-3,6-3
Challenger Granby 07/19 16:00 28 [132] Eliot Spizzirri v August Holmgren [146] 4-6,1-6
Challenger Granby 07/18 14:00 27 [225] Yuta Shimizu v August Holmgren [146] 4-6,6-4,3-6
Challenger Granby 07/17 19:20 26 [252] Marek Gengel v August Holmgren [146] 3-6,4-6
Challenger Granby 07/15 15:50 25 [149] James Watt v August Holmgren [146] 7-6,6-7,4-6
Wimbledon 07/05 14:45 25 [11] Alex De Minaur v August Holmgren [192] 6-4,7-6,6-3
Wimbledon 07/03 13:10 24 [192] August Holmgren v Tomas Machac [23] 7-6,6-7,6-7,7-5,7-6
Wimbledon 07/01 14:30 23 [46] Quentin Halys v August Holmgren [192] 6-7,3-6,4-6
Wimbledon 06/26 10:00 19 [195] August Holmgren v Yosuke Watanuki [179] 6-4,6-7,3-6,7-6,7-6
Wimbledon 06/25 10:00 15 [190] Mikhail Kukushkin v August Holmgren [195] 6-4,6-7,2-6
Wimbledon 06/23 10:00 14 [376] Giles Hussey v August Holmgren [195] 6-4,3-6,5-7
Challenger Nottingham 06/14 15:10 14 [185] August Holmgren v Ugo Blanchet [172] 2-6,4-6

August Holmgren (born 22 April 1998) is a Danish professional tennis player. He has a career-high ATP singles ranking of world No. 144, achieved on 28 July 2025 and a doubles ranking of No. 284, achieved on 9 June 2025. He is currently the No. 3 player from Denmark.

Holmgren has represented Denmark at the Davis Cup making his debut in 2017, and has a win-loss record of 7–3.