W.A.K.O. World Championships 1991 were the eight world kickboxing championships hosted by the W.A.K.O. organization. It was the third world championships to be held in London, involving amateur men and women from twenty-eight countries across the world. There were three styles on offer; Semi-Contact, Light-Contact and Musical Forms, and for the first time since Milan 1981, there would be no Full-Contact kickboxing competition at a W.A.K.O. world championships. Each country was allowed one competitor per weight division per category, although participants were allowed to participate in more than one category.