Thon may refer to:
- People
- Dickie Thon, Major League baseball player
- Konstantin Thon, Russian architect
- Olaf Thon, German footballer
- Olav Thon, Norwegian businessman
- Ozjasz Thon, Polish rabbi
- Places
- Thon Buri, former capital of Thailand and a current district of Bangkok
- Fiction and Mythology
- Thon (mythology), a figure from Greek mythology
- In the post-apocalyptic science-fiction novel A Canticle for Leibowitz, a "thon" is an academic rank similar to a "don" of today's oxonian and cantabrigian usage (also used elsewhere in academia).
- In the Star Wars expanded universe, the ancient Jedi Master Thon
- Other
- The Penn State IFC/Panhellenic Dance Marathon
- "Thon", proposed third-person singular gender-neutral pronoun
- Thon rammana, a pair of Thai and Cambodian drums.
- -thon, a generic suffix, usually used for fundraising events like walk-a-thons or telethons, usually implying a long duration. Derived from marathon.