London Gatwick (), also known as Gatwick Airport (IATA: LGW, ICAO: EGKK), is the secondary international airport serving London, the capital of England and the United Kingdom. It is located near Crawley, West Sussex, England 29.5 miles (47.5 km) south of Central London. In 2022, Gatwick was the second-busiest airport by total passenger traffic in the UK, after Heathrow Airport, and was the 8th-busiest in Europe by total passenger traffic. It covers a total area of 674 hectares (1,670 acres).

Gatwick opened as an aerodrome in the late 1920s; it has been in use for commercial flights since 1933. The airport has two terminals, the North Terminal and the South Terminal, which cover areas of 98,000 m2 (1,050,000 sq ft; 117,000 sq yd) and 160,000 m2 (1,700,000 sq ft; 190,000 sq yd) respectively. It operates as a single-runway airport, using a main runway with a length of 3,316 metres (10,879 ft). A secondary runway is available but, due to its proximity to the main runway, can only be used if the main runway is not in use. In 2018, 46.1 million passengers passed through the airport, a 1.1% increase compared with 2017.

Gatwick is the secondary London hub for British Airways and the largest operating base for low-cost carrier easyJet.