Lechites, also known as the Lechitic tribes, is a name given to certain West Slavic tribes who inhabited modern-day Poland and eastern Germany, and were speakers of the Lechitic languages. Distinct from the Czech–Slovak subgroup, they are the closest ancestors of ethnic Poles and of Pomeranians, Lusatians and Polabians.

The West Slavs are Slavic peoples who speak the West Slavic languages. They separated from the common Slavic group around the 7th century, and established independent polities in Central Europe by the 8th to 9th centuries. The West Slavic languages diversified into their historically attested forms over the 10th to 14th centuries.