What is the most common type of martial art in the world?

The most common type of martial art in the world is Karate. Karate is a Japanese martial art that emphasizes striking techniques such as punches, kicks, knee strikes, elbow strikes, and open-hand techniques, such as knife-hands, spear-hands, and palm-heel strikes. It also includes grappling, throws, joint locks, restraints, and vital point strikes. Karate originated on the island of Okinawa, Japan, and has become popular around the world, with millions of practitioners in over 190 countries.