IV liga Masovia (grupa mazowiecka) is one of the groups of IV liga, the fifth level of Polish football league system.
The league was created in the 2000–01 season, after a new administrative division of Poland was implemented. Until the end of the 2007–08 season,[1] IV liga was the fourth tier of league system, but this was changed with the formation of the Ekstraklasa as the top level league in Poland.
The clubs from Masovian Voivodeship compete in the group. The winner is promoted to III liga, group I. The bottom teams are relegated to the groups of Masovian group of the V liga.