The Dassault Mirage 2000 is a French multirole, single-engine, delta wing, fourth-generation jet fighter manufactured by Dassault Aviation. It was designed in the late 1970s as a lightweight fighter to replace the Mirage III for the French Air Force (Armée de l'air). The Mirage 2000 evolved into a multirole aircraft with several variants developed, with sales to a number of nations. It was later developed into the Mirage 2000N and 2000D strike variants, the improved Mirage 2000-5, and several export variants. Over 600 aircraft were built and it has been in service with nine nations.

The Mirage 2000 is a supersonic combat aircraft of metal construction that shares the general delta-wing layout with the Mirage III, yet incorporates avionics advances that help overcome the latter's aerodynamic limitations. The aircraft's low-set, thin wing has a leading-edge sweep back of 58° and a trailing-edge forward sweep of 3.5°. The flight surfaces on the wings are composed of four elevons and four leading edge slats. A feature of the delta wing is that it offers a comparatively large wing area for a particular design, thereby reducing the wing loading. The wing on a Mirage 2000 has an area of 41 m2, giving it a wing loading of some 77 lb/sq ft at a takeoff weight of 33,000 lb, making it much more manoeuvrable than the F-15 and the similarly sized F-16, which has a wing loading of 110 lb/sq ft. At normal combat load, however, the wing loading reduces to 45 lb/sq ft. One related advantage of the delta-wing design, and especially the Mirage 2000's blending of the wing root and engine, is that it could accommodate more fuel, as the aircraft's internal fuel tanks can carry over 900 gallons of fuel, up more than 200 gallons over the Mirage III. The aircraft's fuselage is of traditional monocoque construction made of almost entirely of metal. The fuselage has been area-ruled to maintain a constant cross-sectional area along with the delta wing to minimise drag.

An airbrake is fitted above and below each wing in an arrangement very similar to that of the Mirage III. A noticeably taller tailfin allows the pilot to retain control at AoAs past 25°, assisted by the small strakes mounted along each air intake. Some composites have been used for the fins, rudder, elevons, and various access panels, giving a weight saving of some 100 kg. The Mirage 2000 has been noted for its superb handling, especially given its delta-wing design.

Dassault engineers have embedded into the design a certain degree of relaxed stability as the centre of gravity, or neutral point, is placed ahead of the centre of pressure, enhancing maneuverability. It incorporates negative stability and fly-by-wire controls with four analog computers. As first demonstrated at the 1978 Farnborough Airshow, such designs, as well as the use of computer-controlled dynamic controls were capable of overcoming the delta-wing shortcomings related to poor low-speed control, while retaining the advantages, such as low drag, low radar cross section, ideal high-speed aerodynamics, and large internal volume, as well as simplicity, provided by the absence of horizontal tail surfaces.

The Mirage 2000-5 is a major advancement over previous variants and embodies a comprehensive electronic, sensor, and cockpit upgrade to expand its combat ability, while reducing pilot workload. The centrepiece of the Mirage 2000-5 overhaul is the Thomson-CSF RDY (radar Doppler multitarget) with look down/shoot down capability. The multifunction radar is capable of air-to-ground, air-to-air, and air-to-sea operations. In the air-to-ground mode, the RDY has navigation and attack functions that give it deep-strike and close-support capabilities. Capable of automatically locking onto multiple targets at first contact, the radar could detect flying targets travelling as low as 60 m (200 ft). The introduction of the radar allows the aircraft to use the MICA missile, up to six of which could be fired simultaneously at targets due to the advances within the radar. Despite the increase in offensive capability, pilot workload is compensated for by the introduction of a multidisplay glass cockpit, based on the development of the Rafale. The aircraft has the ICMS Mk2 countermeasures suit, which contains three radar detectors and an infrared sensor that are linked to active jammers and chaff/flare dispensers.

Enhancements to offensive systems included a datalink for the targeting of MICA EM missiles, the addition of the Damocles forward-looking infrared (FLIR) targeting pod, and a newer, more stealthy Thales RDY-2 all-weather synthetic aperture radar with moving target indicator capability, which also grants the aircraft improved air-to-ground capability. The avionics were further updated with higher resolution color displays, an optional Topsight helmet-mounted display, and the addition of the modular data-processing unit designed for the Rafale. A new Thales Totem 3000 inertial navigation system with ring laser gyroscope and GPS capability were added, providing much greater accuracy, higher reliability, and shorter alignment time than the older ULISS 52 navigation system it replaced. Other upgrades included the addition of an on-board oxygen generation system for the pilot and an ICMS 3 digital countermeasures suite.