Stockholm Skavsta Airport (Swedish: Stockholm Skavsta flygplats) (IATA: NYO, ICAO: ESKN), or Nyköping Airport is an international airport in Nyköping Municipality, Sweden, 5 km (3.1 mi) northwest of Nyköping and approximately 100 km (62 mi) southwest of Stockholm. It is served primarily by low-cost airlines and cargo operators. The airport handled a total of 364,603 passengers in 2024, making it Sweden's 7th-busiest airport.

The airport is located far outside Stockholm Municipality and Stockholm County, but is included in STO, the IATA airport code for Stockholm airports. Locally the airport is referred to simply as Skavsta. Stockholm's main international airport is Stockholm Arlanda Airport.