"Pheng Sat Lāo" () is the national anthem of the Lao People's Democratic Republic. Dr. Thongdy Sounthonevichit composed the music and wrote the lyrics in 1941. It was adopted as the national anthem of the Kingdom of Laos in 1945. The original lyrics were revised after the Communists triumphed in the Laotian Civil War and established the Lao People's Democratic Republic in 1975, with the new lyrics written by Sisana Sisane.