Mary-Kate and Ashley in Action! is an animated television series by DIC Entertainment, Dualstar, Buena Vista Television and Club Acclaim, featuring the voices and likeness of Mary-Kate and Ashley Olsen. It is also a series of books that spun off, from the show. The show premiered on October 20, 2001 on The Walt Disney Company's One Saturday Morning on The American Broadcasting Company and was cancelled after one season due to poor ratings. Reruns were later shown on Toon Disney.

Mary-Kate and Ashley go with their friends to Hawaii for a party.

Mary-Kate and Ashley are ready to hit New York and show off their ballet skills. Spend the day taking in all of the sights that New York has to offer with Mary-Kate and Ashley leading up to a ballet grand finale.

Mary-Kate & Ashley are singing, dancing and shopping their way around America's largest mall, the Mall of America. Grab your shopping bag and get ready to take off because the girls want you to be part of all the fun—from the fashion to the music to the roller coasters to the bumper cars.