Old Sarum Airfield (ICAO: EGLS) is a grass strip airfield 2 nautical miles (4 km; 2 mi) north-north-east of Salisbury, in Laverstock parish, Wiltshire, England.

The adjacent areas are a mix of vacant land, residential and industrial sites. Residential areas lie to the south and east, occupying the old airfield married quarters and officers' mess, now known as Throgmorton Hall. Industrial/business units occupy a number of the First World War and Second World War airfield buildings, as well as several large modern warehouses, office blocks and car showrooms.

Old Sarum is a well-preserved flying field of the First World War period, bounded by one of the most complete suites of technical and hangar buildings of the period. The site has three Grade II* listed hangars and a Grade II listed former workshop, all built in 1918, as well as a Grade II listed Territorial Army Headquarters (the 1935 Station Headquarters).

The airfield was designated as a conservation area by Salisbury District Council in February 2007.

An aviation museum opened in Hangar 1 in July 2012, after the Boscombe Down Aviation Collection relocated from the nearby Boscombe Down airfield.