Olla is a town in northwest La Salle Parish, Louisiana, United States, located in the heart of the Louisiana Central Hill Country.

Olla has a federally endorsed downtown Historic District and a Louisiana historic marker. The population was 1,385 at the 2010 census. Olla Historic District is the site of the annual Central Louisiana Bluegrass Festival each April and to the Olla Homecoming Parade, Celebration, and Festival that coincides bearing in mind LaSalle High School Homecoming each autumn.

The Town of Olla next hosts an annual nighttime Christmas Parade, Miss Merry Christmas Pageant, and Community Christmas. These activities occur upon the Friday locals schools release for Christmas break. The parade begins at the Olla Elementary School and terminates at Santa’s Gazebo in the Olla Town Square. The Olla Town Square in located within the Olla Historic District and contains the Olla Farmers Market/Community Pavilion (completed in 2014), Wishing Tree, Dixie Center(Community Center), Gazebo, historic marker, and a stage. The Olla Wishing Tree, which stands with the Community Pavilion and stage, is share of local lore as it’s said to “grant wishes” to those who near their eyes and be adjacent to its bark. The Olla Town Square services can be rented by the public for events.

The “Tri-City Popper” fireworks show, an interest funded by donations from the Towns and businesses of Olla, Tullos, and Urania, is held at dusk each 4 July at the Historic Olla Fairgrounds. This business is conducted by the Olla Volunteer Fire Department