Stadium: Extra Vollurinn Round: 10
Home Manager: Ulfur Arnar Jokulsson Away Manager: Christopher Brazell
| Iceland 1 Deild | 2023/08/16 19:15 | Grotta Seltjarnarnes v Fjolnir | D | 3-3 |
| Iceland 1 Deild | 2023/06/08 19:15 | Fjolnir v Grotta Seltjarnarnes | D | 2-2 |
| Iceland 1 Deild | 2022/09/10 14:00 | Fjolnir v Grotta Seltjarnarnes | L | 0-1 |
| Iceland 1 Deild | 2022/07/05 19:15 | Grotta Seltjarnarnes v Fjolnir | L | 4-1 |
| Iceland 1 Deild | 2021/07/15 19:15 | Grotta Seltjarnarnes v Fjolnir | L | 2-1 |
| Iceland 1 Deild | 2021/05/14 19:15 | Fjolnir v Grotta Seltjarnarnes | W | 1-0 |
| Iceland Premier League | 2020/09/14 19:15 | Grotta Seltjarnarnes v Fjolnir | D | 2-2 |
| Iceland Premier League | 2020/07/08 19:15 | Fjolnir v Grotta Seltjarnarnes | L | 0-3 |
| Iceland League Cup | 2024/03/10 16:30 | Thor Akureyri v Fjolnir | D | 1-1 |
| Iceland League Cup | 2024/02/29 18:40 | Njardvik v Fjolnir | W | 0-3 |
| Iceland League Cup | 2024/02/22 19:30 | Fjolnir v Stjarnan | D | 1-1 |
| Iceland League Cup | 2024/02/15 20:00 | Fjolnir v KR Reykjavik | L | 1-6 |
| Iceland League Cup | 2024/02/10 15:00 | Fjolnir v HK Kopavogur | W | 3-0 |
| Iceland Pre-Season Cup | 2024/02/01 19:30 | IR Reykjavik v Fjolnir | L | 2-0 |
| Iceland Pre-Season Cup | 2024/01/18 19:30 | Fjolnir v Vikingur Reykjavik | L | 0-4 |
| Iceland Pre-Season Cup | 2024/01/13 12:00 | Fylkir Reykjavik v Fjolnir | L | 5-0 |
| Iceland League Cup | 2024/03/02 11:00 | FH Hafnarfjordur v Grotta Seltjarnarnes | L | 1-0 |
| Iceland League Cup | 2024/02/23 19:00 | Grotta Seltjarnarnes v Breidablik | L | 0-5 |
| Iceland League Cup | 2024/02/16 18:15 | Keflavik v Grotta Seltjarnarnes | L | 3-1 |
| Iceland League Cup | 2024/02/09 19:00 | Grotta Seltjarnarnes v Grindavik | L | 1-2 |
| Iceland 1 Deild | 2023/09/16 14:00 | IA Akranes v Grotta Seltjarnarnes | L | 4-1 |
| Iceland 1 Deild | 2023/09/09 17:00 | Grotta Seltjarnarnes v Thor Akureyri | W | 1-0 |
| Iceland 1 Deild | 2023/09/01 17:30 | UMF Selfoss v Grotta Seltjarnarnes | L | 1-0 |
| Iceland 1 Deild | 2023/08/25 19:15 | Grotta Seltjarnarnes v Throttur Reykjavik | D | 2-2 |