Mońki [ˈmɔɲkʲi] is a town in northeastern Poland and, as of 1999, is situated in the Podlaskie Voivodeship.

In the 19th century, when building railroad from Grodno was in progress, in the neighborhood of Mońki a train station was built.

Through Mońki goes droga krajowa 65 (road), connecting city with Białystok and Grajewo.

Near Mońki there are some of the greatest swamps in Europe, the Biebrza River Swamps, and in 1993 the government created the Biebrza National Park (BNP) to recognise and protect their unique nature.

The Biebrza River Swamps are an important habitat for rare birds such as the ruff (pol.