Rienzi is a town in Alcorn County, Mississippi, United States.

[3] Rienzi was named for Cola di Rienzo, a medieval Italian politician.

[citation needed] According to the United States Census Bureau, the town has a total area of 1.0 square mile (2.6 km2), all land.

The racial makeup of the town was 69.39% White, 28.48% African American, 2.12% from other races.

21.3% of all households were made up of individuals, and 14.2% had someone living alone who was 65 years of age or older.