Head to Head
| Iceland Premier League | 2018/08/12 18:00 | KR Reykjavik v Fjolnir | D | 0-0 |
| Iceland Premier League | 2018/05/21 19:15 | Fjolnir v KR Reykjavik | D | 1-1 |
| Iceland Premier League | 2017/09/24 14:00 | Fjolnir v KR Reykjavik | D | 2-2 |
| Iceland Premier League | 2017/07/27 19:15 | KR Reykjavik v Fjolnir | L | 2-0 |
| Iceland League Cup | 2017/02/24 19:00 | KR Reykjavik v Fjolnir | L | 3-1 |
| Iceland Cup | 2017/02/09 21:00 | Fjolnir v KR Reykjavik | W | 3-0 |
| Iceland Premier League | 2016/09/18 16:00 | KR Reykjavik v Fjolnir | L | 3-2 |
| Iceland Premier League | 2016/06/15 19:15 | Fjolnir v KR Reykjavik | W | 3-1 |
Home History
| Iceland Pre-Season Cup | 2020/01/10 21:00 | IR Reykjavik v Fjolnir | W | 1-5 |
| Iceland Pre-Season Cup | 2020/01/04 17:15 | Fjolnir v Throttur Reykjavik | W | 7-0 |
| Iceland Pre-Season Cup | 2020/01/04 15:16 | Fjolnir v Throttur Reykjavik | W | 7-0 |
| Iceland 1 Deild | 2019/09/21 14:00 | Keflavik v Fjolnir | L | 1-0 |
| Iceland 1 Deild | 2019/09/14 14:00 | Fjolnir v Leiknir Reykjavik | D | 1-1 |
| Iceland 1 Deild | 2019/09/08 16:00 | Thor Akureyri v Fjolnir | W | 1-7 |
| Iceland 1 Deild | 2019/08/30 18:00 | Fjolnir v Throttur Reykjavik | W | 6-0 |
| Iceland 1 Deild | 2019/08/23 18:00 | Vikingur Olafsvik v Fjolnir | L | 4-1 |
Away History
| Iceland Pre-Season Cup | 2020/01/10 19:00 | KR Reykjavik v Fylkir Reykjavik | W | 2-1 |
| Iceland Pre-Season Cup | 2019/12/05 17:30 | Valur Reykjavik v KR Reykjavik | L | 3-2 |
| Iceland Pre-Season Cup | 2019/11/29 17:00 | KR Reykjavik v Vikingur Reykjavik | W | 4-0 |
| Iceland Pre-Season Cup | 2019/11/23 10:47 | FH Hafnarfjordur v KR Reykjavik | W | 0-1 |
| Iceland Pre-Season Cup | 2019/11/15 18:03 | Grotta Seltjarnarnes v KR Reykjavik | W | 2-3 |
| Iceland Premier League | 2019/09/28 14:00 | Breidablik v KR Reykjavik | W | 1-2 |
| Iceland Premier League | 2019/09/22 14:00 | KR Reykjavik v FH Hafnarfjordur | W | 3-2 |
| Iceland Premier League | 2019/09/16 19:15 | Valur Reykjavik v KR Reykjavik | W | 0-1 |