| ITF W35 Bujumbura | 04/11 09:25 | 26 | Fanny Ostlund v Maelys Bougrat | 4-6,6-2,4-6 | |
| ITF W35 Bujumbura | 04/09 09:30 | 25 | Fanny Ostlund v Amanda C Nava Elkin | 7-6,3-6,6-2 | |
| ITF W35 Bujumbura | 04/04 07:00 | 26 | Fanny Ostlund v Maelys Bougrat | 3-6,7-6,2-6 | |
| ITF W35 Bujumbura | 04/02 08:00 | 25 | Fanny Ostlund v Farah Heddar | 6-0,6-2 | |
| ITF W35 Nagpur | 03/05 04:00 | 25 | Daria Kudashova v Fanny Ostlund | 7-5,7-6 | |
| ITF W35 Gurugram | 02/29 04:00 | 26 | [367] Fanny Ostlund v Yeonwoo Ku [448] | 6-4,2-6,5-7 | |
| ITF W35 Gurugram | 02/28 03:55 | 25 | Fanny Ostlund v Michika Ozeki | 6-2,6-4 | |
| ITF W35 Le Gosier | 01/25 20:45 | 26 | [451] Cadence Brace v Fanny Ostlund [406] | 7-5,4-6,7-6 | |
| ITF W35 Le Gosier | 01/24 13:30 | 25 | Jaeda Daniel v Fanny Ostlund | 1-6,3-6 | |
| ITF W35 Petit-Bourg | 01/21 19:00 | 29 | [281] Maria Mateas v Fanny Ostlund [406] | 6-4,4-6,3-6 | |
| ITF W35 Petit-Bourg | 01/20 17:00 | 28 | Fanny Ostlund v Ashton Bowers | 7-5,7-6 | |
| ITF W35 Petit-Bourg | 01/19 15:00 | 27 | [211] Fanny Ostlund v Jacqueline Cabaj Awad [339] | 6-3,6-2 |
Fanny Östlund (born 5 May 1997) is a Swedish tennis player.
Östlund has a career-high singles ranking by the Women's Tennis Association (WTA) of 406, achieved on 15 January 2024. She also has a career-high WTA doubles ranking of 210, achieved on 1 January 2024. She has won three singles titles and 15 doubles titles on the ITF Circuit.
Östlund competes for Sweden in the Billie Jean King Cup, where she has a win/loss record of 0–1.