This document outlines the rules and regulations for competitive Arnis tournaments organized by Arnis Pederasyong Internasyonal, Inc. (i-ARNIS). It covers regulations for facilities, equipment, participants, scoring and penalties for both Full Contact and Anyo (forms) events. The Full Contact rules describe the 8x8m competition area, requirements for padded sticks, protective gear, scoring system, fouls and ways to determine the match winner. The Anyo rules cover requirements for individual, team and mass demonstration categories as well as scoring criteria and penalties. Official calls, signals and duties of tournament officials are also standardized.