The 9K113 Konkurs is an anti-tank missile of Soviet origin. It was developed at the same time as the smaller 9K111 Fagot and features a similar design. The 9K113 uses a larger and longer missile that is much more powerful and has twice the range of the smaller 9M111. The French HOT and US TOW missiles have a roughly similar performance as the 9K113.

The 9K113 can be considered the larger brother of the 9K111 system. The missile design and guidance are similar and only the size, range and performance differ. The 9M113 missile is transported in and launched from a container. The missile has a booster charge and sustainer rocket motor. Four small vanes at the front and four large wings in the middle provide stability during launch. The 9M113 is wire guided and features SACLOS guidance. The 9P135 lightweight tripod launcher includes an optical sight system and computing mechanism. The same launcher can be used with the smaller and shorter range 9M111 Konkurs missile.

The 9K113 can be used to take out any armored vehicle, but the frontal armor of modern tanks may still pose a problem. The penetration is 750 to 800mm RHA and the improved missile can also negate the effect of ERA. The maximum range is 4 km and 2.5 km with a night sight. If not obscured by smoke the SACLOS guidedance system ensures a good chance to hit the target, even when the target is moving.

The 9K113 is a mobile system. The tripod launcher with a missile ready to fire weighs less than 40 kg. When the load is divided over multiple persons the 9K113 may even be transported over long distances by infantry. While the 9M113 missiles are heavier and often a large night vision sight is used the 9K113 is less mobile than the 9K111 Fagot. Therefore th 9K113 manpack launcher is normally transported by vehicle. The 9K113 launcher has also been pintle mounted on various armored vehicles. The most notable vehicle applications are the 9P148 tank destroyer based on the BRDM-2 and BMP-2 mechanized infantry combat vehicle.

The 9K113 was widely used by the USSR and most Eastern European nations during the Cold War. The 9K113 was also widely exported, but not the extent of the earlier 9K11 Malyutka system. The 9K113 remains in use and production and is expected to remain in use even though more modern systems such as the 9P133 Kornet are available.