This research is motivated by children's fundamental movement skills, which are less than optimal. Mastery of fundamental movement skills that are less than optimal will affect the achievement of further movement skills. The purpose of the study was to determine the effect of using traditional games on fundamental movement skills. The traditional games applied are engklek, gobag sodor and boi-boinan. Using 3 traditional games is important because the results of previous research on fundamental movement skills have never used more than one type of traditional game and the results of children's fundamental movement skills are maximized. Using a quantitative approach with the type of pre-experimental research design one group pretest posttest Sampling using a random sampling technique with the result being 30 child samples. Using a quantitative approach with the type of pre-experimental research design one group pretest posttest Sampling using random sampling techniques with the results of 30 child samples. Using parametric statistical methods and data collection techniques by observation using the Test of Gross Motor Skill-Second Edition (TGMD-2) instrument, namely running movement, jumping motion, gallop, horizontal jumping movement, catching movement, kicking movement, throwing motion, ball rolling motion, and leap movement. The statistical test results show a p value = 0.00 which means there is a relationship between fundamental movement skills and traditional games. In addition, the results of data analysis have an effect of 5% so it is concluded that there is an effect of traditional games on fundamental movement skills in children