Weno, formerly Moen, is an island municipality of Chuuk State of the Federated States of Micronesia (FSM). It is the largest town in the FSM. It has an estimated area of 20 square kilometers.

Chuuk State is one of the four states of the Federated States of Micronesia (FSM). The other states are Kosrae State, Pohnpei State, and Yap State. It consists of several island groups: Namoneas, Faichuuk, the Hall Islands, Namonuito Atoll, Pattiw, and the Mortlock Islands. Chuuk is by far the FSM's most populous state, with 50,000 inhabitants on 120 square kilometers. Chuuk Lagoon is where most people live. Weno island, in the lagoon, is Chuuk's state capital and the country's biggest city. It may hold a referendum on independence in the near future, although this referendum has been repeatedly postponed.