Úrvalsdeild   M. W D L goals
  at home 4 2 0 2 7 : 4
  Away 4 2 1 1 4 : 3
  8 4 1 3 11 : 7
1. deild   M. W D L goals
  at home 5 4 1 0 16 : 6
  Away 6 4 2 0 15 : 7
  11 8 3 0 31 : 13
Lengjubikarinn   M. W D L goals
  at home 2 0 1 1 3 : 4
  Away 1 0 0 1 0 : 1
  3 0 1 2 3 : 5
overall   M. W D L goals
  at home 11 6 2 3 26 : 14
  Away 11 6 3 2 19 : 11
  Neutral Place 0 0 0 0 0 : 0
  22 12 5 5 45 : 25
Úrvalsdeild
2018 20. Round UMF Grindavík - Fjölnir Reykjavík 0:1 (0:1)
2018 9. Round Fjölnir Reykjavík - UMF Grindavík 0:1 (0:0)
2017 22. Round UMF Grindavík - Fjölnir Reykjavík 2:1 (1:0)
2017 11. Round Fjölnir Reykjavík - UMF Grindavík 4:0 (2:0)
2009 14. Round UMF Grindavík - Fjölnir Reykjavík 1:1
2009 3. Round Fjölnir Reykjavík - UMF Grindavík 3:2
2008 14. Round Fjölnir Reykjavík - UMF Grindavík 0:1
2008 3. Round UMF Grindavík - Fjölnir Reykjavík 0:1
1. deild
2025 2. Round UMF Grindavík - Fjölnir Reykjavík 3:3 (1:2)
2024 13. Round Fjölnir Reykjavík - UMF Grindavík 5:1 (1:1)
2024 1. Round UMF Grindavík - Fjölnir Reykjavík 2:3 (0:2)
2023 18. Round Fjölnir Reykjavík - UMF Grindavík 5:1 (2:0)
2023 7. Round UMF Grindavík - Fjölnir Reykjavík 0:1 (0:1)
2022 17. Round Fjölnir Reykjavík - UMF Grindavík 4:3
2022 6. Round UMF Grindavík - Fjölnir Reykjavík 2:2
2021 14. Round Fjölnir Reykjavík - UMF Grindavík 2:1 (0:0)
2021 3. Round UMF Grindavík - Fjölnir Reykjavík 0:2 (0:0)
2013 20. Round UMF Grindavík - Fjölnir Reykjavík 0:4
2013 9. Round Fjölnir Reykjavík - UMF Grindavík 0:0
Lengjubikarinn
2025 Group 1 Fjölnir Reykjavík - UMF Grindavík 2:3 (0:1)
2013 Group 1 UMF Grindavík - Fjölnir Reykjavík 1:0
2012 Group 3 Fjölnir Reykjavík - UMF Grindavík 1:1

For games that were decided on penalties the score after 120 minutes will be included in the ranking