Little Tigers

Ages 3.5 - 6.5



Ages 6.5 - 12

Kids Class


Ages 13 & Up


Welcome to the Tiger’s Claw Martial Arts website! Thank you for visiting!

Welcome! Since 1973, Tiger’s Claw Martial Arts has been providing expert instruction for children & adults in Isshin-Ryu Karate, Self-defense, and the Martial Arts.

Our Hillsdale, NJ school was opened in 1999 by husband and wife team Professor Ronald Allan Mertz and Master Maureen Mertz. Our Black Belt staff is highly trained and proficient with over 140 years of combined training under the direct supervision of ProfessorĀ Ronald Allen Mertz, 10th Degree Black Belt. We are proud that our school and instructors have won many awards including the American Isshin-Ryu Dojo of the Year, Platinum Lifetime Achievement Award and Isshin-Ryu Childrenā€˜s Instructor of the Year. Tiger’s Claw is home to the award winning Little Tiger’s Program, founded by Master Maureen Mertz in 1999. It is also the headquarter dojo for the Tiger Karate Society granted by its founder Grand Master Richard Mrofka.

We are located in Hillsdale, NJ in Bergen County and our student base comes from Hillsdale, Park Ridge, Westwood, Washington Twp, Emerson, Montvale, River Vale, Pearl River, Old Tappan & Paramus.

We are a family oriented dojo. We welcome new Students to join at anytime. We have no contracts and no experience is necessary! We hope you enjoy our website and will stop by and visit us if you are in the area. To schedule your FREE TRIAL CLASS, please contact us at 201-263-1983 or email @

“Tiger’s Claw Martial Arts is the Leader in Martial Arts Training for Children.”

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About Us


Tiger's Claw Martial Arts is an American family owned & operated dojo. Our Black Belts have a combined 140 years of training directly under our Head Instructor, Professor Ronald A. Mertz, 10th Degree Black Belt.

New students are welcome to join at any time. We offer classes from ages 3.5 and up, no experience necessary.

Contact Info


Thank you for visiting our website, we hope that we have provided you with enough information to help you in your search for a Martial Arts training facility. Please call to set up your FREE TRIAL CLASS

Phone: 201-263-1983
Email: Address: 49B Prospect Pl,
                  Rear Door, 2nd Fl
                  Hillsdale, NJ 07642

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