About Me

Hi, my name is Stefan van der Merwe

I’m a Biokineticist, Karate Instructor and Coach based in Windhoek, Namibia.

My passion for martial arts and exercise have always been my main motivators and ultimately formed the pillars around which I have built my career.

I first started competing as a karate athlete at the age of 7 and currently have over 20 years of experience in Okinawan Goju-Ryu karate. I have been blessed to be able to represent Namibia numerous times internationally, most notably at the Commonwealth Karate Championships and Africa Games.

After graduating from Stellenbosch University in 2015, I returned to Namibia where I started working as a full time Biokineticist before starting my own practice, Trinity Fitness Namibia, in 2019.

I have also always enjoyed teaching both traditional and sports karate and currently work as a Sensei at Okinawan Goju-Ryu Karate Namibia and National Coach of the Namibian Karate Team.

If you are interested in learning more about what I do, please do not hesitate to contact me!


UFAK Certified Kata and Kumite Coach

BSc (Hons) Biokinetics

BA (Sport Science)

NSCA Certified Personal Trainer

Certified Sports Massage Therapist

International Baccalaureate Diploma

Sports Achievements

4th Dan Black Belt (TOGKF)

Commonwealth Karate Bronze Medalist

6 x AUSC Region 5 Bronze Medalist

2 x Namibian Senior Male Grand Champion

4 x OGKN Senior Male Grand Champion

Associated Businesses