The Best Children's Martial Arts Classes in the Boston Metro

Fun, Focus, and Confidence for Ages 5 and Up

Sign up for a free trial class today and let your child experience the benefits of martial arts firsthand. Watch them grow stronger, both mentally and physically!

If you’d like to schedule a one-on-one private class, please reach out to the Sigma team directly by clicking here.

Help Your Child Build Confidence and Discipline through Martial Arts!

At Sigma Martial Arts & Fitness, our Children’s Martial Arts program is designed to give kids ages 5 and up the tools they need to succeed both on and off the mats. Through our action-packed martial arts training program, we focus on building confidence, discipline, and respect – all while keeping them active, engaged, and having fun.

Why Choose Our Children's Martial Arts Program?

  • Expert Instructors: Our instructors have combined decades of experience working with children, ensuring that your child gets the attention and guidance they need.

  • Fun, Safe, and Clean Environment: Our classes are designed to be fun and engaging, helping your child stay active while learning new skills in a safe, clean studio.

  • Leadership and Confidence: From improving self-esteem to teaching leadership skills, our classes provide lifelong benefits that will follow your child to school, home, and beyond.

  • Character Development with Blackbelt Mindset Academy: Our unique Blackbelt Mindset Academy supplements our regular classes and instills the values of being a better person, including perseverance, focus, and self-discipline.

  • Safety Comes First: All of our instructors are trained in first aid, and we create a supportive, structured environment where your child can thrive safely.

Join Our Martial Arts Community! Our martial arts program for children helps build positive habits, encourage healthy activity, and develop a lifelong love of learning. Your child will leave each class with a sense of accomplishment and growing confidence.

What People Are Saying

  • This is a great place to learn karate for children the instructors have a lot a patience and they are also very professional and still make It fun for kids.

    Ana Maria L.

  • This is an awesome martial arts studio. The owner runs a clean operation, and the instruction is top notch. The dojo is well appointed with safety padding on floors and pillars, and has floor to ceiling mirrors to check your form during classes. I hope all aspiring martial arts students and aficionados alike take note of this hidden gem!

    Vambah S.

  • This place is the best! They have a balanced mix of traditional and practical martial arts training. Their classes are always fun, informative and a great workout!

    Mickey T.

  • Amazing coach, clean facility, nice and fun learning environment. Basically the best Muay Thai practice I ever had! Strongly recommended!!!!!

    Kaofang N.

  • Was extremely impressed with how clean the dojo was! The Judo Instructor Sensei Mo was very friendly welcoming and knowledgeable. Cant wait to go back.

    Tony D.

  • Very clean, spacious, and a great selection of gear to use.

    Joshua C.

  • I've been going here for almost a whole year, and I absolutely love the place. It's welcoming, fun, clean, and a great workout! The instructors are friendly and kind, they offer a lot of different classes, and it's great for both kids and adults. To me, it's a perfect middle ground between the extremes of super hardcore bro gyms that focus only on competition, and flakey programs that give you exercise but no real martial arts training.

    Alison E.


  • Impressive place. Clean, organized and professional. The instructors are seasoned professionals and everything is at your own pace. All skills levels. Everyone just super nice and supportive. And awesome workout!

    William B.

  • I started out doing adult martial arts, but liked the school and the style so much I have now also taken up Muay Thai. Both classes are a lot of fun. I am learning something new every time, and I’ve become much stronger (no more back pain, hurray!). For the quality of instruction, number of opportunities to train throughout the week and individual attention you get it’s really very good value for money. I cannot recommend this place enough!

    Lauren D.

  • This is a great addition to Medford. The studio is clean and the instructors are phenomenal. There's a great sense of community and the atmosphere is welcoming for anyone who is new or has experience in martial arts, kickboxing, or mauy thai. Since joining the studio, I have been recommending it to my friends since I'm always learning so much here and growing my skills in martial arts.em

    Kristina B.

  • As a new student to martial arts I really appreciate their attention to detail, stories about their previous experiences and of course getting in a good workout! I have had nothing but a great experience and look forward to many more classes. If you are considering starting martial arts or just want a good workout in a positive setting, I highly recommend Sigma.

    Jessica R.

Watch them shine! Try a free class today!