The IMCF is built from national associations and legal organisations who work together for the growth of medieval combat as a sport. Membership spans Europe, the Americas, Asia, Oceania, and Africa, reflecting the federation's international reach.

Below are the countries represented within the federation.

The International Medieval Combat Federation unites national associations and legal organisations from five continents under a single democratic framework. Member nations work collaboratively to develop regulations, safety standards, and competition structures that allow fighters from diverse backgrounds to compete on equal footing. Each national association brings its own martial traditions and training methods, enriching the global community with distinct styles and approaches. Through this cooperative model, the federation ensures that medieval combat grows as a recognised sport, with clearly defined rules for duels and battles, proper equipment requirements, and trained marshals and judges overseeing every event.

Membership within the IMCF represents a commitment to the shared vision of authentic, full-contact medieval combat presented as a modern athletic discipline. National bodies from Europe, the Americas, Asia, Oceania, and Africa contribute to the federation's international character, allowing participants to experience the unique atmosphere of tournaments held in castles and arenas across the world. For fighters, belonging to a member nation means access to annual championships, the opportunity to earn gold medals and titles, and the chance to represent their country on an epic international stage. The sense of pride and camaraderie among member nations is what drives the federation's continued growth.

Becoming part of the IMCF family offers national organisations a pathway to develop medieval combat within their own borders, supported by the experience and knowledge of the wider federation. Member associations benefit from shared best practices in event management, safety protocols, and athlete development, ensuring that competitions meet the highest standards regardless of location. The federation's democratic structure gives every member nation a voice in shaping the future of the sport, from rule refinements to championship formats. This collaborative spirit, built on mutual respect and a shared passion for history brought to life, ensures the federation remains vibrant, competitive, and welcoming to new nations seeking to join the global medieval combat community.