Armor refers to a set of items which increase the player's defensive abilities or give special effects or abilities when worn. Armor can be made with Leather, Gold, Iron and Diamonds (all Vanilla) consisting of chestplates, helmets, boots and leggings.

Tekkit Lite and its mods expands the materials that armor can be made out of and its effects to the player's protection. Several of these new armor sets can be seen in IC2's NanoSuit Armor and QuantumSuit Armor or the Modular Powersuits mod.