The 2015 2. deild karla (English: Men's Second Division) was the 50th season of third-tier football in Iceland. Twelve teams contest the league. Play began on 9 May and concluded on 19 September.
The league is contested by twelve clubs, eight of which played in the division during the 2014 season. There are four new clubs from the previous campaign:
Each team plays every opponent once home and away for a total of 22 matches per club, and 132 matches altogether.