Firemaking is a skill that can be used to set objects such as logs or lanterns on fire.

Firemaking is the companion skill of Woodcutting, often trained by players to complete quests or minigames that require a certain level of Firemaking. A number of members' Quests with good rewards require Firemaking skills, such as Recipe for Disaster, Forgiveness of a Chaos Dwarf, The Void Stares Back and Desert Treasure. Similarly, Firemaking-oriented minigames with good rewards include Shades of Mort'ton and All Fired Up. Also, after completing the Legacy of Seergaze quest, players can hunt down the Vyrewatch and burn their Vyre corpses for rewards.

Another use for Firemaking is the ability to make a fire and cook things like meat and fish on the spot; when low-level players fight Giant rats, they can then cook the rat meat and consume it to heal life points. The Firemaking skill is also beneficial to players who use a hand cannon, since a higher firemaking level will decrease the chance of the cannon exploding.