The Kornet (Russian: "Корнет"; English: Cornet) is a Russian anti-tank guided missile (ATGM). It is intended to deal with main battle tanks and to engage slow and low flying helicopters, but is not intended to fully replace previous systems, due to the cost. The missile carries the GRAU designation 9M133 and the NATO reporting name AT-14 Spriggan.
The Kornet anti-tank missile was unveiled in October 1994 by the KBP Instrument Design Bureau. The missile started development in 1988 as a modular, universal system able to engage any target from a mix of platforms using a reliable laser beam guidance system that was simple to use. It is a heavy ATGM, superior to the earlier 9K111 Fagot (NATO: AT-4 Spigot) and 9K113 Konkurs (NATO: AT-5 Spandrel) wire-guided ATGMs, but not to replace them (due to the cost). The missile is believed to have entered service in the Russian army in 1994. Its export designation is the Kornet-E.