The 1980 season of 2. deild karla was the 15th season of third-tier football in Iceland.

Group A

PosTeamPlayedPointsNotes1Reynir S.1222Advanced to final round2Leiknir R.12173ÍK12144Léttir12135Óðinn1286Katla1267Hekla124

Group B

PosTeamPlayedPointsNotes1Grindavík1219Advanced to final round2Víðir12173Njarðvík12154Afturelding12145Grótta12116Stjarnan1267Hamar124

Group C

PosTeamPlayedPointsNotes1Skallagrímur1015Advanced to final round2HÞV10143Bolungarvík10124Víkingur Ó.10115Snæfell1086Reynir H.100

Group D

PosTeamPlayedPointsNotes1HSÞ-b812Advanced to final round2KS8103Magni874Árroðinn875Leiftur84

Group E

PosTeamPlayedPointsNotes1Tindastóll816Advanced to final round2Reynir Á.8113Dagsbrún864Ungmennasamband Austur-Húnvetninga855Efling82

Group F

PosTeamPlayedPointsNotes1Einherji1221Advanced to final round2Sindri12133Huginn12124Hrafnkell Freysgoði12125Leiknir F.1286Súlan1297Valur Reyð.126

Final round

Group A

Group B

Final

Both Reynir S. and Skallagrímur won promotion to the 1981 1. deild karla.

References