The Klingon battle cruiser was a type of warship used by the Klingon Empire. Several Klingon battle cruisers fought in the Battle of the Binary Stars in 2256. (DIS: "Battle at the Binary Stars") Two Klingon battle cruisers, equipped with cloaking devices, participated in the ambush of the USS Gagarin. They attempted to flank the USS Discovery. (DIS: "Si Vis Pacem, Para Bellum")