BrahMos is a supersonic cruise missile (Cruise missile#Supersonic) that can be launched from submarines, ships, aircraft or land. It is a joint venture between Indias Defence Research and Development Organisation (DRDO) and Russias NPO Mashinostroeyenia who have together formed BrahMos Aerospace Private Limited.

The acronym BrahMos is perceived as the confluence of the two nations represented by two rivers, the Brahmaputra of India and the Moskva (Moskva River) of Russia. It travels at speeds of Mach (Mach (speed)) 2.5 to 2.8. It is about three-and-a-half times faster than the USAs subsonic Harpoon (Harpoon missile) cruise missile. A hypersonic version of the missile is also presently under development (Lab Tested with 5.26 Mach Speed).

Though India had wanted the BrahMos to be based on a mid range cruise missile, namely P-700 Granit, instead Russia opted for the shorter range sister of the missile, P-800 Oniks, in order to comply with MTCR restrictions, to which Russia is a signatory. Its propulsion is based on the Russian missile, and guidance has been developed by BrahMos Corp.