2019 1. divisjon

The 2019 1. divisjon (referred to as OBOS-ligaen for sponsorship reasons) is a Norwegian second-tier football league season.

Team changes from 2018
In the 2018 1. divisjon, Viking and Mjøndalen were promoted to the 2019 Eliteserien, while Åsane, Florø and Levanger were relegated to the 2019 2. divisjon.

Start and Sandefjord were relegated from the 2018 Eliteserien, while Raufoss, Skeid and KFUM Oslo were promoted from the 2018 2. divisjon.