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Unleash your inner strength and cultivate self-confidence at The Self Defense Institute in Tewksbury, Massachusetts.

Since 1999, we've empowered individuals of all ages, from 3 1/2 to 18 years and adults, with the skills and discipline to excel in the training and beyond.

The Self-Defense Institute - Tewksbury, MA

The Self-Defense Institute

Get ready to feel empowered and confident with the top-notch training and resources at The Self-Defense Institute! 

Looking for a fun and an engaging activity for the whole family? Our Programs offer a unique experience that will bring your family closer together. With this training, you're sure to create lasting memories that everyone will cherish.

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Tewksbury Karate/Martial Arts

                         Celebrating 25 Years!   

                     25th Annual Spring and/or Summer Registration is Open! 
                      Ages 3 1/2 - 18 Years and Adults

     Monthly Tuition.  No contracts.  Ask for Family and Corporate Rates.
                         Training Programs are tailored to each age group.  Ask for schedule.



Programs for All Ages
Tewksbury Karate | Tewksbury Martial Arts

Welcome to training for ages 3.5-18 years and adults!

The training is designed to help you increase focus, patience, self-control, confidence, balance, coordination, flexibility, and agility.


We are passionate about empowering individuals with the skills and resources they need.

Tewksbury Karate

At The Self-Defense Institute in Tewksbury, MA, we believe that training is not just about learning how to protect yourself physically, but also about gaining confidence, discipline, and mental clarity. Our experienced instructors are dedicated to helping you achieve your personal goals, whether it's improving your fitness level, reducing stress, or simply feeling more empowered. Join us today and discover the many benefits of training at The Self-Defense Institute.

TSDI - News
Tewksbury Karate

We are excited to share the latest news.   

Our team has been working hard to bring you innovative programs and services that meet your needs. We are committed to providing exceptional customer service and ensuring your satisfaction with every interaction. Stay tuned for more updates. 

World Martial Arts Federation
Bruce Lee Foundation Award presented by Shannon Lee
Chuck Norris Foundation Award presented by Chuck Norris
Community Contributor
25+ Years
Tewksbury Martial Ats
Wilmington/Tewksbury Chamber of Commerce
Great Lowell Chamber of Commerce

Established in 1999                                                   Over 35 Years Experience

The Self-Defense Institute (TSDI) in Tewksbury, Massachusetts, is dedicated to empowering students with the skills and knowledge they need to become tomorrow's leaders.  Experienced instructors provide top-notch training.   TSDI continues to inspire, innovate and bring positive energy to the community.


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