Mark II

Mark II could refer to various items in the Halo universe:


 * MJOLNIR Mark II - A prototype battle suit produced by, produced early in the project's development.
 * HRUNTING/YGGDRASIL Mark II Armor Defense System - A series of powered exoskeletons jointly produced by and.
 * HRUNTING/YGGDRASIL Mark II [D] Geyrion - A powered exoskeleton nicknamed the Geyrion.
 * HRUNTING/YGGDRASIL Mark II [J] Colossus - A successor to the Geyrion, designed for the UNSC Army and later utilised by forces on-board the.