Tonto was the sidekick of The Lone Ranger, the popular American fictional Western character created by Fran Striker. Tonto made his first appearance on the twelfth show (which aired on station WXYZ in February 25 1933). Though he became as iconic as his friend, Tonto was originally created just so the Lone Ranger would have someone to talk to.

Tonto is a developer-oriented companion to the popular Pronto line of programmable remotes made by Philips. Tonto provides both an IDE GUI and a Java API for editing CCF files.

Tonto is a Java-based cross-platform alternative to ProntoEdit .

a method for advancing three-notrump overcalls that relies on transfers.

Tonto was the name of a brown horse once owned by Robotman (Cliff Steele).