American Tribal Style® (or ATS® ) is a style of Belly Dance created by Carolena Nericcio of San Francisco with her troupe Fat Chance Belly Dance (FCBD).

Stylistically, it borrows heavily from Indian, Flamenco and Gypsy traditions blended with the conventional Middle Eastern dance forms and rhythms of traditional Belly Dance/ Compared to traditional (for example, Egyptian or Classical Style) Belly Dance. ATS® portrays more earthy and folkloric style, both in it's movements and it's costumes. It's main characteristic is collective improvisation: the dancers learn a common vocabulary of movements with subtle cues related to each movement.