Chernihiv voivodeship. Administrative-territorial unit in the Polish-Lithuanian Commonwealth, created in 1635. Its center was the city of Chernihiv. The voivodeship was composed of Chernihiv county and Novhorod-Siverskyi county. As a result of the Cossack-Polish War of 1648–54, Chernihiv voivodeship was abolished, and its territories became part of the Chernihiv regiment and Nizhen regiment.