Oakland Judo provides high quality instruction in judo and Brazilian jiujitsu for the city of Oakland and the surrounding bay area. We are located in the Laurel District of Oakland, just off the 580. We offer classes for both kids and adults. Judo is great for keeping in shape, self-defense and body awareness. It’s also incredibly fun. Come join us!

  • Have fun

  • Learn a skill

  • Get in shape

martial arts


Alex Feng
Alex FengSensei Emeritus
Dr. Alex Feng received his black belt at age nineteen in judo and jujitsu. He holds a second-degree black belt in Kodenkan jujitsu and a fourth-degree black belt in judo. Dr. Feng has trained with such legends as Wally Jay and Keiko Fukuda. In 1967, he was the American Judo & Jujitsu Federation national heavyweight champion in Judo.
Jonah Ewell
Jonah EwellSensei & Head Instructor
Jonah Ewell started training at eight years old with Dr. Feng, learning judo and kung fu. He received his black belt shortly after high school and currently holds the rank of nidan (second degree black belt). He was captain of the wrestling team in high school and also has experience with kickboxing, boxing, and tae kwon do. He also has a purple belt in Brazilian jiujitsu under Omar Kasdi, affiliated with Rio Combat Team and Team Carlson Gracie.

-National Level Coach
-Local Referee
-Heads Up concussion safety

Leon Kenin
Leon KeninSensei
Leon Kenin grew up in Berkeley where he began learning judo at age eight with Dr. Feng. He has competed in California at the youth level, at the national collegiate level as a member of the Princeton Judo Team, and internationally at the adult level. Sensei Leon founded and ran a Judo school in Jerusalem, Israel. He also founded the youth Judo program at the Downtown Berkeley YMCA, as well as running Kenin Kan Judo Club. Leon practices Traditional Chinese Medicine in Oakland and is the father of four children, who all practice Judo.
Alan Aki
Alan AkiSensei
Alan Aki also grew up in Berkeley and started taking judo at age 12 with Tone Shimizu and Mike Grunwald at To Bay Dojo. He continued training and competing throughout high school and college. He and his wife perform with the Mahea Uchiyama Center for International Dance in Berkeley. Alan primarily plays the toere (Tahitian log drum) and ‘ukuleles (both Hawaiian and Tahitian) and has appeared on a few of Kumu Mahea’s cds, while his wife dances. They also have two young children who they hope will take up both hobbies.
Mark Harmon
Mark HarmonSensei
Mark grew up on the peninsula south of San Francisco and received his brown belt from judo legend Willy Cahill. After a long period away from judo, he joined Oakland Judo in 2013 and received his first degree black belt shortly thereafter. He is also a blue belt in Brazilian jiujitsu under Omar Kasdi, affiliated with Rio Combat team. Mark is interested in old-school judo techniques such as leg locks.

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Flexible membership packages to suit all levels of athlete and achive your fitness goals