The DeKalb County Public Library (DCPL) is the public library system of DeKalb County, Georgia in the Atlanta metropolitan area. The library system headquarters are at the Darro C. Willey Administrative Offices in Decatur.

DeKalb County is located in the north central portion of the U.S. state of Georgia. As of the 2020 census, the population was 764,382, making it Georgia's fourth-most populous county. Its county seat is Decatur.