Lumber is processed wood in North American English, corresponding to timber in the rest of the English speaking world.

Lumber may also refer to:

Lumber room, a room to store currently un-needed furniture

Places Norway Lumber (Kristiansand), a neighbourhood in the city of Kristiansand

United States Lumber, Arkansas, an unincorporated community in Arkansas Lumber City, Georgia, a city in Telfair County, Georgia Lumber, West Virginia, an unincorporated community in West Virginia Lumber River, a river in North Carolina Lumber Bridge, North Carolina, a town in Robeson County, North Carolina Lumber Township, Pennsylvania, a township in Pennsylvania

See also Lumber City (disambiguation)