Mount Lebanon is a town in Bienville Parish, Louisiana, United States.

Its pioneers were Baptists from South Carolina who quickly established a church and school.

One of the Baptist organizers in Mount Lebanon was pastor George Washington Baines, maternal great-grandfather of future U.S. President Lyndon B. Johnson.

There are eight houses in the town that are on the National Register of Historic Places, including a building once used as a stagecoach stop and hotel.

After the railroad was built through Gibsland, 3 miles (5 km) north, Mount Lebanon began to decline in population and economic opportunity.

[3] According to the United States Census Bureau, the town has a total area of 4.0 square miles (10.4 km2), all land.