What is the name of the tool used to pry a bicycle tire off the rim?

The tool used to pry a bicycle tire off its rim is called a tire lever.

A tire lever is a small, usually plastic tool that slips beneath the tire bead and lifts it over the rim flange. Mechanics often use two or three levers in sequence: one loosens a section of bead, while another moves around the rim until the tire can be removed. This is especially useful when replacing an inner tube or repairing a puncture.

Plastic levers are common because they are light and less likely to scratch an aluminum or carbon rim or pinch the inner tube. Metal levers can provide more force, but they may damage the rim, tire, or tube if used carelessly. A tire lever removes the tire; it does not inflate it or remove the wheel from the bicycle.

“Tyre iron” is a genuine alternative term, especially in British usage, and “lever” can describe the tool informally. However, “tire lever” is the clearest standard name for the bicycle-specific tool, making the stored answer the best canonical choice.