The Agni missile (Sanskrit: अग्नि, Agnī "Fire") is a family of Short to Intermediate range ballistic missiles developed by India under the Integrated Guided Missile Development Program. As of 2007, the Agni missile family comprises three deployed variants:

1. Agni-I short range ballistic missile, 700 km range,
2. Agni-II medium range ballistic missile, 2,500 km range,
3. Agni-III intermediate range ballistic missile,3,500- 5,000 km range.
4. Agni-IV intercontinental ballistic missile , 6,000 km range (in development)

It was first tested at the Interim Test Range in Chandipur in 1989, and is capable of carrying a conventional payload of 1000 kg (2,200 lb) or a nuclear warhead. It consists of one (short range) or two stages (intermediate range). It is rail and road mobile. It is powered by solid propellants.

Agni-III is the third in the Agni series of missiles. The Agni I has a range of 700-800 km while the Agni-II as a range of 2,000–2,500 km. They are claimed to be a part of the "credible deterrence" against China and Pakistan. The Agni-II can only reach most parts of western, central and southern China. With the successful test of Agni-III, which has a range of 3500 km, India can target most of Chinese cities including Beijing and Shanghai. Agni-III was tested on July 9, 2006 from Wheeler island off the coast of the eastern state of Orissa. After the launch, it was reported that the second stage of the rocket had failed to separate and the missile had fallen well short of its target. Agni-III was again tested on April 12, 2007, this time successfully, from the Wheeler Island off the coast of Orissa. Sources told that the Circular ErrorProbable(CEP) was less than 20 meters, which is best of class in the world. It can hit strategic targets well beyond 3500 km.