The aim of this study was to determine whether there are differences between taekwondo competitors in the age categories from 15 to 17 and from 18 to 20 years in anthropological characteristics. The sample of subjects consisted of two groups of competitors in taekwondo. The first group consisted of 23 respondents aged 15 to 17 years, and the second group consisted of 22 respondents aged 18 to 20 years. All respondents of both age categories were male. In this paper, a sample of 9 anthropometric variables, 6 variables for the assessment of aerobic functional ability and 10 variables for the assessment of motor abilities such as agility, explosive power and flexibility were used. Data processing was carried out using the Statistics Program. The Shapiro-Wilks test was used to determine the normality of variable distributions. The T-difference test was used for variables that were normally distributed and the Mann-Whitney U-test for variables that are not normally distributed. Based on the conducted tests in anthropometric characteristics, statistical significance was confirmed in four out of nine variables, while in the functional abilities of the competitors in taekwondo in the age categories from 15 to 17 and from18 to 20 years there was no statistical significance, and in motor skills only two variables were statistically significant out of ten. The reason for this may be the insufficient number of respondents in both age categories and the uneven distribution of respondents aged 15, 16 and 17, as well as 18, 19 and 20 year olds. In order to obtain more optimal results on the anthropological characteristics of competitors in taekwondo, the sample of respondents should be increased with the aim of distributing the respondents within the age categories as evenly as possible.