The 2019 season of the 4. divisjon, the fifth highest association football league for men in Norway. Between 16 and 26 games (depending on group size) are played in 24 groups, with 3 points given for wins and 1 for draws. Incidentally, the 2020 4. divisjon was cancelled before commencing because of the COVID-19 pandemic in Norway, so the promotions and relegations first came into effect in the 2021 4. divisjon.