The 2018 Úrvalsdeild karla, also known as Pepsi-deild karla for sponsorship reasons, was the 107th season of top-flight Icelandic football. Twelve teams contested the league, including the defending champions Valur, who won their 21st league title in 2017.[1]
The season began on 27 April 2018 and concluded on 29 September 2018.
The 2018 Úrvalsdeild was contested by twelve teams, ten of which played in the division the previous year and two teams promoted from 1. deild karla. The bottom two teams from the previous season, Víkingur Ó. and ÍA, were relegated to the 2018 1. deild karla and were replaced by Fylkir and Keflavík, champions and runners-up of the 2017 1. deild karla respectively.
^Since the winners of 2018 Icelandic Cup, Stjarnan, qualified for European competition based on their league position, the spot awarded to the Cup winner (Europa League first qualifying round) was passed to the next best-placed team (the fourth-placed team).