| Founded | 1997 1955 (as 2. deild karla) |
|---|---|
| Country |  Iceland |
| Number of teams | 12 |
| Level on pyramid | 2 |
| Promotion to | Besta deild karla |
| Relegation to | 2. deild karla |
| Domestic cup(s) | Bikarkeppni karla League Cup |
| Current champions | Fylkir (5th title) (2022) |
| Most championships | Breiðablik (6 titles) Þróttur R. |
| Website | KSÍ.is |
| Current: 2023 | |
1. deild karla, known as Lengjudeild karla (The Lengja League) for sponsorship reasons, is a football league in Iceland. It is the second highest professional level in the Icelandic football league system. The league was founded in 1955 and current champions are ÍA. The league was expanded to 12 teams for the 2007 season, after having only 10 teams for many years. Since 2008 the top three divisions have all had 12 teams.