Yap State (Yapese: Nam nu Wa'ab or Nam nu Waqab, lit. 'State of Yap'), is one of the four states of the Federated States of Micronesia (FSM). The other states are Kosrae State, Pohnpei State, and Chuuk State.

Colonia is the capital of Yap State, which administers both the Yap Main Islands and the island of Satawal, as well as fourteen atolls reaching to the east and south for some 800 km (500 mi; 430 nmi). Historically, a tributary system existed between the Neighboring Islands and the Yap Main Islands. This is probably related to the need for goods from the high islands, including food and wood, to construct seagoing vessels.

According to the FSM Statistics Office, the population of Colonia and the municipalities of the State of Yap was 11,577 in 2020. The state has a total land area of 102 km² (39 sq mi).