The Dassault Mirage III (French pronunciation: [miʁaʒ]) is a family of single/dual-seat, single-engine, fighter aircraft developed and manufactured by French aircraft company Dassault Aviation. It was the first Western European combat aircraft to exceed Mach 2 in horizontal flight, which it achieved on 24 October 1958.

In 1952, the French government issued its specification, calling for a lightweight, all-weather interceptor. Amongst the respondents were Dassault with their design, initially known as the Mirage I. Following favourable flight testing held over the course of 1954, in which speeds of up to Mach 1.6 were attained, it was decided that a larger follow-on aircraft would be required to bear the necessary equipment and payloads. An enlarged Mirage II proposal was considered, as well as MD 610 Cavalier (3 versions), but was discarded in favour of a further-developed design, powered by the newly developed Snecma Atar afterburning turbojet engine, designated as the Mirage III. In October 1960, the first major production model, designated as the Mirage IIIC, performed its maiden flight. Initial operational deliveries of this model commenced in July 1961; a total of 95 Mirage IIICs were obtained by the French Air Force (Armée de l'Air, AdA). The Mirage IIIC was rapidly followed by numerous other variants. 

The first major production model, the Mirage IIIC, first flew in October 1960. The IIIC was largely similar to the earlier IIIA, being less than a half meter longer and featuring a full operational fit. The Mirage IIIC was a single-seat interceptor, with an Atar 09B turbojet engine, featuring an eyelid type variable exhaust. The Mirage IIIC was armed with twin 30 mm DEFA cannon fitted in the belly with the gun ports under the air intakes. Early production Mirage IIICs had three stores pylons, one under the fuselage and one under each wing; another outboard pylon was soon added to each wing, for a total of five, excluding a sleek supersonic tank which also had bomb-carrying capacity. The outboard pylon was intended to carry an AIM-9B Sidewinder air-to-air missile, later replaced by the Matra R.550 Magic and was also armed with the radar guided Matra R.530 Missile on the center line pylon.

A total of 95 Mirage IIICs were obtained by the French Air Force (Armée de l'Air, AdA), with initial operational deliveries in July 1961. The Mirage IIIC remained in service with the AdA until 1988.