Meet Us
Underground MMA is a premier martial arts training facility in San Jose, CA. We specialize in instructing Shamrock MMA, a comprehensive mixed martial arts and fitness program designed by Frank Shamrock. We are a family-operated gym and foster a supportive and inclusive community environment where members of all skill levels feel like family.
Our Classes
Group and private lessons tailored for all skill levels in San Jose.
Real Voices
”I’ve been coming here for nearly two decades and I loved coming to class from day one to today. Jannsen is a great teacher and coach. If your looking to learn MMA or looking for a better school this is the one.”
Join Us
Train hard with expert coaches in San Jose—group and private lessons available.