Swansboro is a town in Onslow County, North Carolina, United States, located along the Atlantic Ocean. In 2010, the population was 2,663.
Swansboro started as a settlement around the plantation of Theophilus Weeks. In 1783, Swansboro was incorporated as a town, taking its name from Samuel Swann, a Speaker in the North Carolina House of Commons and a resident of Onslow County. In 1818, Otway Burns built the Prometheus, the first river steamboat constructed in North Carolina.
The town, originally spelled Swannsborough, is sometimes called "The Friendly City by the Sea". M.N. Lisk, a popular Swansboro mayor, initiated the annual Mullet Festival, one of the first coastal seafood festivals in North Carolina.
The town is featured as the setting of Nicholas Sparks' novel The Guardian.
The Swansboro Historic District was listed on the National Register of Historic Places in 1990.