Redan is an unincorporated community and census-designated place (CDP) in DeKalb County, Georgia, United States. As of the 2020 census, the CDP had a total population of 31,749. It is a predominantly African American community in eastern DeKalb County, and is a suburb of Atlanta.

According to tradition, the name "Redan" is an amalgamation of the names of two early settlers: N. M. Reid and Annie Alford. Redan High School is located in Redan CDP, and Lithonia High School was formerly in the Redan CDP.

Redan is located at 33°44′21″N 84°9′57″W / 33.73917°N 84.16583°W / 33.73917; -84.16583 (33.739256, -84.165781). According to the United States Census Bureau, the CDP has a total area of 9.6 square miles (25 km2), of which 0.1 square miles (0.26 km2), or 0.52%, is water.

Redan was first listed as a census designated place in the 1990 U.S. census.

As of the 2020 United States census, there were 31,749 people, 11,471 households, and 7,143 families residing in the CDP.

DeKalb County School District serves the CDP.

Elementary schools serving parts of Redan CDP:

Some areas formerly in the CDP are zoned to Stoneview Elementary School, in Stonecrest.

Middle schools serving parts of Redan CDP:

Redan High School is in Redan CDP. Lithonia High School, formerly in the CDP, is now in Stonecrest. They, along with Miller Grove High School in Stonecrest, serve portions of the CDP.

There are the following DeKalb County Public Library branches: