Úrvalsdeild   M. W D L goals
  at home 4 1 1 2 3 : 4
  Away 4 2 0 2 4 : 7
  8 3 1 4 7 : 11
1. deild   M. W D L goals
  at home 5 0 1 4 4 : 12
  Away 5 0 1 4 6 : 16
  10 0 2 8 10 : 28
Lengjubikarinn   M. W D L goals
  at home 1 1 0 0 1 : 0
  Away 2 1 1 0 4 : 3
  3 2 1 0 5 : 3
overall   M. W D L goals
  at home 10 2 2 6 8 : 16
  Away 11 3 2 6 14 : 26
  Neutral Place 0 0 0 0 0 : 0
  21 5 4 12 22 : 42
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
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