Kayu Agung is a town located in the South Sumatra province of Indonesia. It serves as the administrative capital of the Ogan Komering Ilir Regency.
The population of the town has shown steady growth over recent decades, recorded at 62,694 during the 2010 Census and increasing to 75,976 in the 2020 Census. As of mid-2024, the official population estimate for Kayu Agung is approximately 80,380.