This study was conducted to determine the effects of plyometric training on power, speed and agility on under 16 athletes. Thirty-two males from various background of sports were randomly selected as subjects. Subjects were divided into two groups which are intervention (N=16) and control (N=16). Subjects performed training for five weeks. Test batteries used includes 30-m sprint, 30 feet shuttle run and vertical jump to look at the effects of plyometric training given. Data that were obtained was analysed using T-test. Analysis showed that treatment group manage to improve performance in all the three tests while no significant differences between pre and post-test among control group for all the three tests. Based on the result, plyometric training that were given could improve power, speed and agility.