Chainmail Helmet is a head-slot armor piece in Minecraft that grants 2 armor points (one full armor icon) and 165 durability in Java Edition (166 in Bedrock Edition), the same durability as an Iron Helmet but with less protection. Unlike most gear, Chainmail Helmet has no survival crafting recipe — players obtain it through journeyman-level Armorer villager trades, as rare loot in generated structure chests, or from zombies and skeletons that spawn already wearing it and can drop the helmet on death (an 8.5% base chance, up to 11.5% with Looting III).

Chainmail Helmet can be enchanted on an enchanting table or anvil with Protection IV, Respiration III, Aqua Affinity, Thorns III, Unbreaking III, and Mending, making it viable early-game head protection when iron or diamond is scarce. Although there is no chainmail ingot, you repair a Chainmail Helmet on an anvil with iron ingots — each ingot restores 25% of its maximum durability — while combining two helmets on an anvil or grindstone adds their durabilities plus 5%, and Mending restores durability with experience orbs. Smelting a Chainmail Helmet in a furnace yields just one iron nugget. Builders and collectors also keep Chainmail Helmet for its distinctive grey woven texture, which stands out from solid iron or gold helmets on armor stand displays.