Pierrefonds may refer to:
- Pierrefonds, Oise commune in Oise, France
- Château de Pierrefonds, castle in Pierrefonds, restored by Eugène Viollet-le-Duc
- Pierrefonds-Roxboro, a borough of Montreal, Canada
- Pierrefonds Comprehensive High School, a high-school in the borough
- Pierrefonds-Senneville, the borough that preceded the current one
- Pierrefonds, Quebec, a defunct city now part of the borough
- Pierrefonds—Dollard, a federal district on the island of Montreal
- Pierrefonds Airport, an airport in the island of Réunion