The Lee County Courthouse features two courthouse buildings constructed at 15 East Chestnut Street in Marianna, Arkansas, United States, the county seat of Lee County. The original courthouse was a wooden at the corner of Poplar and Mississippi streets built in 1873 when Marianna became the county seat of Lee County. A larger courthouse was built in 1890 and it was expanded with another new courthouse building added next to it in 1936. The courthouse compound was listed on the National Register of Historic Places in 1995. The newer courthouse was designed by Memphis, Tennessee based architect George Mahan Jr. with Everett Woods and built in the Colonial Revival and Art Deco styles.