The Convention on Cluster Munitions (CCM) is an international treaty that prohibits the use, transfer and stockpile of cluster bombs, a type of explosive weapon which scatters submunitions ("bomblets") over an area. The convention was adopted on 30 May 2008 in Dublin, and was opened for signature on 3 December 2008 in Oslo. It entered into force on 1 August 2010, six months after it was ratified by 30 states. Currently, 71 states have ratified it and another 40 have signed but not ratified it.

Countries that ratify the convention will be obliged "never under any circumstances to":

(a) Use cluster munitions;
(b) Develop, produce, otherwise acquire, stockpile, retain or transfer to anyone, directly or indirectly, cluster munitions;
(c) Assist, encourage or induce anyone to engage in any activity prohibited to a State Party under this Convention.

The treaty allows certain types of weapons with submunitions that do not have the indiscriminate area effects or pose the same unexploded ordnance risks as cluster munitions. Permitted weapons must contain less than ten submunitions, and each must weigh more than 4 kilograms (8.8 lb), and each submunition must have the capability to detect and engage a single target object and contain electronic self-destruct and self-deactivation mechanisms. Weapons containing submunitions which all individually weigh at least 20 kg (44 lb) are also excluded. A limited number of prohibited weapons and submunitions can be acquired and kept for training in, and development of, detection, clearance and destruction techniques and counter-measures.

A cluster munition is a form of air-dropped or ground-launched explosive weapon that releases or ejects smaller sub-munitions. Commonly, this is a cluster bomb that ejects explosive bomblets that are designed to kill enemy personnel and destroy vehicles. Other cluster munitions are designed to destroy runways, electric power transmission lines, disperse chemical or biological weapons, or to scatter land mines. Some submunition-based weapons can disperse non-munitions, such as leaflets.

Because cluster bombs release many small bomblets over a wide area they pose risks to civilians both during attacks and afterwards. During attacks the weapons are prone to indiscriminate effects, especially in populated areas. Unexploded bomblets can kill or maim civilians long after a conflict has ended, and are costly to locate and remove.

Cluster munitions are prohibited for those nations that ratify the Convention on Cluster Munitions, adopted in Dublin, Ireland in May 2008. The Convention entered into force and became binding international law upon ratifying states on 1 August 2010, six months after being ratified by 30 states; currently, a total of 111 states had signed the Convention and 71 of those have ratified it.