Ultron is an android supervillain in the Marvel Comics universe. Avengers: Age of Ultron, 2015 film featuring Ultron
Ultron may also refer to:
Ultron, a fictional device in the Star Control computer game series Ultron, the name of the home planet of superhero Thermoman in the British comedy series My Hero Petron Ultron, a brand name of gasoline engine oils in the Philippines by Petron Corporation A model name used for various camera lenses manufactured by Cosina Voigtländer