A.T.O.M. – Alpha Teens on Machines (known as Action Man: A.T.O.M. in some countries) is an English-language French superhero animated television series produced by SIP Animation in association with Jetix Europe.

The series focuses on the adventures of five teenagers in the fictional Landmark City. The eponymous Alpha Teens, which consist of Axel Manning (the team leader), Catalina Leone, Crey Kingston, Zack Hawkes, and Ollie Sharker, test prototype vehicles and weapons for Lee Industries, and use these prototypes to combat criminals, particularly the nefarious and sadistic crime boss Alexander Paine.

In countries such as Australia, France, Germany, Italy, and the United Kingdom, and in Latin America, the series was branded as Action Man: A.T.O.M., with Panini Comics publishing a tie-in comic book series by that title.