Contact Us National Karate - Academy of Martial Arts


Central Park Square
1422 Mainstreet
Hopkins, MN 55343
United States
School Owner: Mr. Jeff Sidner, 6th Degree Black Belt
Head Instructor: Mr. Jeff Sidner.
Instructors: Mr. Steve Mitchell, 3rd Degree Black Belt
Mr. Justin Wilson, 2nd Degree Black Belt
Ms. Sarah Myers, 1st Degree Black Belt
Office Manager: Ms. Tammy Goodwater.
About Hopkins National Karate

Since 1973, the National Karate Academy has been dedicated to helping men, women and children discover the benefits of martial arts training.

Physical strength, flexibility and weight control are developed through high repetition natural body exercises.

Mental confidence is achieved from time-tested & effective self-defense skill.

NK training teaches respect, self-discipline and perseverance.

NK’s black belt professional instructors are highly trained and dedicated to help all students achieve their life goals.

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About Mr. Jeff Sidner

Jeff Sidner began his martial arts training in 1989. After trying several schools, he found the Maplewood National Karate School in 1992 and immediately knew he’d found his martial arts home. He was promoted to 1st Degree Black Belt in 1995 and currently holds the rank of 6th Degree Black Belt.


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6 days ago

Hopkins National Karate

Some highlights from Diamond Nationals. So proud of the Hopkins NK family. ... See MoreSee Less

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BRING YOUR TROPHIES TO CLASS THIS WEEK - We want to get pictures of each of you! (And Don't forget Pizza Party on Saturday @ 2PM) ... See MoreSee Less

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The Diamond Nationals school/team medals report is out. Hopkins ranked 35th highest number of 1st (7), 2nd (2), and 3rd place (4) medals (out of 286 school/teams that earned at least one medal)! Way to go!!!!! So proud of you all - 1st place or Finalist - YOU GOT OUT THERE and were AWESOME! ... See MoreSee Less

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Way to go Hopkins NK! We are so proud of each and every one of you who went out there and performed!

Check out our competitors below! Don't see your name or your kids name? Post a picture/video of them below and tell us how it went! Don't forget to bring your awards into class this week!

Congratulations to:

Black Belts
▪️Mrs. Tursich 🏅4th Traditional Open Hand.
▪️Mr. Chim 🥇1st Sparring.
▪️Ms. Myers 🥈2nd Traditional Weapons,🥉3rd Traditional Open Hand
▪️Mr. Larson 🏅5th Traditional Open Hand.
▪️Mr. Goodwater 🏅4th Traditional Weapons,🏅Finalist Traditional Open Hand,🏅Finalist Sparring.
▪️Mr. Maxwell🏅4th Musical Weapons,🏅4th Traditional Weapons. (NASKA division)

Color Belts
▪️Elliot Larson 🥇Traditional Open Hand.
▪️Brenna Larson 🥉 3rd Traditional Open Hand, 🥉Sparring.
▪️Dahlia Cases 🥇1st Traditional Open Hand,🥇1st Underbelt Basics.
▪️Franco Camelli 🥈2nd Traditional Open Hand.
... See MoreSee Less

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*2 week trial is a one-time offer for new students only. Uniform purchase required.