| Type: | town |
| County: | Prahova |
| Population Total: | auto |
| Official Name: | Bușteni |
| Coordinates: | 45.4117°N 25.5372°W |
| Leader Name: | Laurențiu-Mircea Corbu[1] |
| Leader Party: | PNL |
| Term: | 2020 - 2024 |
| Elevation: | 875 |
| Area Total: | 75.28 |
| Postal Code: | 105500 |
Bușteni (in Romanian; Moldavian; Moldovan pronounced as /buʃˈtenʲ/) is a small mountain town in the north of Prahova County, Muntenia, Romania. It is located in the Prahova Valley, at the bottom of the Bucegi Mountains, that have a maximum altitude of . Its name literally means tree-logs in Romanian. One village, Poiana Țapului, is administratively part of the town, formerly a separate commune prior to 1950. According to the 2021 census, it has 8,368 inhabitants.
Bușteni's average altitude is . It is one of the most popular mountain resorts in Romania, with year-round tourism opportunities, including skiing and mountain climbing.The town and the surrounding mountains were the site of military confrontations in 1916, during World War I (see Romania during World War I). A large commemorative monument (about high), Heroes' Cross (Crucea Eroilor) lies atop nearby Caraiman Peak, at nearly . The monument is lighted at night and is visible from virtually everywhere in Bușteni.
The main local industries are wood industry and tourism. Many holiday houses have been built in the town since the 2000s.
Also a new Information Tourism Center was set up near the City Hall.
See also: List of twin towns and sister cities in Romania.
Bușteni is twinned with:
Moissy-Cramayel, France, since 1993
Djerba-Midoun, Tunisia, since 2000Bușteni has a warm-summer humid continental climate (Dfb in the Köppen climate classification).