Copenhagen Airport, Kastrup (Danish: Københavns Lufthavn, Kastrup, pronounced [kʰøpm̩ˈhɑwns ˈlɔftˌhɑwˀn ˈkʰæˌstʁɔp]) (IATA: CPH, ICAO: EKCH) is an international airport serving Copenhagen, the capital of Denmark, as well as Zealand, the Øresund Region, and southern Sweden including Scania. In 2023 it is the largest airport in the Nordic countries.

As the Nordic countries' largest airport, it served 30.3 million passengers in 2019. It is one of the oldest international airports in Europe, the fourth-busiest in Northern Europe, and the busiest for international travel in Scandinavia.

The airport is on the island of Amager, 8 kilometres (5 miles) south of Copenhagen city centre, and 24 km (15 mi) west of Malmö city centre, to which it is connected by the Øresund Bridge. The airport covers an area of 11.8 km2 (4.6 sq mi). Most of the airport is in the municipality of Tårnby, with a small part in the city of Dragør.

The airport is the main hub out of three used by Scandinavian Airlines and is also an operating base for Sunclass Airlines and Norwegian Air Shuttle. Copenhagen Airport handles around 60 scheduled airlines, and has a maximum operation capability of 83 operations/hour, and a total of 108 jet bridges and remote parking stands. Unlike other Scandinavian airports, most of the airport's passengers are international.