Busteni 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 2505 m. Its name literally means tree-logs in Romanian. One village, Poiana Tapului, is administratively part of the town, formerly a separate commune prior to 1950. According to the 2011 census, it has 8,894 inhabitants.

Busteni's average altitude is 900 m. It is one of the most popular mountain resorts in Romania,[citation needed] 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. A large commemorative monument (about 25 m high), Heroes' Cross (Crucea Eroilor) lies atop nearby Caraiman Peak, at nearly 2,260 m. The monument is lighted at night and is visible from virtually everywhere in Bu?teni.

The main local industries are wood industry and tourism. Many holiday houses have been recently built in the town.

Also a new Information Tourism Center was set up near the City Hall.