Sam Thong
| Sam Thong | |
|---|---|
| City of Sam Thong in 1962s–1970s | |
| Coordinates: 19°10′47″N 102°53′24″E / 19.17972°N 102.89000°E | |
| Country | Laos | 
| Province | Xaisomboun | 
| District | Longchaeng | 
Sam Thong (Lao: ຊຳທອງ, sometimes spelled Samthong) is a town in Xiangkhouang province, Laos. During the Vietnam War, it was the site of a USAID refugee operation center and an administrative center for much of northern Laos.