Zombie is a common undead hostile mob that spawns at night or in dark areas and attacks with melee damage. Zombies are one of the most frequently encountered enemies in Minecraft, appearing in caves, villages, and the Overworld surface after sunset.

Zombies drop 0–2 rotten flesh upon death, which can be increased with the Looting enchantment. They also drop 5 experience when killed by a player. A Zombie head can be obtained if a Zombie is killed by a charged creeper's explosion.

Zombies cannot be bred but spawn naturally in dark areas and in large groups at night. They are also the only mob that can convert villagers into Zombie villagers if they successfully attack one. If a Zombie drowns in water, it transforms into a drowned instead of dying.

Zombies are hostile mobs that chase players, villagers, and iron golems on sight. They attack with melee strikes, dealing damage on contact. In Hard difficulty, they can break wooden doors to invade shelters. If a Zombie takes damage from sunlight, it catches fire unless it is in water or wearing a helmet. Baby zombies are faster and more aggressive, making them more dangerous than their adult counterparts. Zombies sometimes spawn with armor or weapons, making them stronger enemies. Zombified piglins and husks are variants of zombies that spawn in different biomes and conditions.