Golden State Athletic Club is a martial arts and fitness facility in Marin County, California, offering adult kickboxing classes, kids martial arts, yoga, and fitness programs. Its adult program includes all-levels kickboxing with a system that draws from Muay Thai, boxing, and Dutch kickboxing. Youth offerings include Little Ninjas for ages 4–6 and Youth MMA for ages 7–14, with instruction in striking, grappling, kickboxing, boxing, and Brazilian Jiu-Jitsu in a safe, structured group setting.