Klingon dropship was a designation given to a type of starship that was utilized by the Klingon Empire, which was typically used as a troop transport.
In 2268 two bulky, gray-green Klingon dropships from the Klingon 5th Battle Fleet departed from Q'Tahl to find the Jinoteur system. When they landed, Cervantes Quinn estimated that each dropship was carrying a full company of Klingon ground troops. The two dropships were destroyed when Bridget McLellan detonated a 5 megaton trilithium bomb. (VAN - Declassified novella: The Stars Look Down)