Mount Olive is a town in Covington County, Mississippi, United States.

According to the United States Census Bureau, the town has a total area of 3.1 square miles (8.0 km2), all land.

As of the 2020 United States census, there were 895 people, 589 households, and 492 families residing in the town.

The racial makeup of the town was 46.81% White, 51.96% African American, 0.11% Pacific Islander, and 1.12% from two or more races.

The town of Mount Olive is served by the Covington County School District.