In researches conducted so far, numerous health, psychological, social and economic benefits of engaging in physical activity were established. It was proven that the level of physical activity depends on various factors, one of them being the physical activity enjoyment. The goal of this research was to determine the association between the level of physical activity of students in early school age and their enjoyment while engaging in physical activity. Participants of the research were students of fourth grades from Petar Preradović and Zadarski Otoci primary schools from Zadar. The level of physical activity was estimated with help of Croatian version of PAQ-C questionnaire, while Croatian version of PACES questionnaire was used for estimating the level of enjoyment in physical activity. T- test for independent samples was used for calculating gender differences in the level of physical activity and gender differences in the level of enjoyment in the physical activity, and Pearson’s coefficients of correlation were calculated for determining the association between the level of physical activity and the level of physical activity enjoyment, while regression analyseis was used for calculating the contribution of the variable for estimating enjoyment in total level of physical activity. Results have shown that male and female students achieve moderate level of total physical activity (ASF=3,23 i ASM=3,29), and that there is no statistically significant difference between male and female students, but the difference was determined in variable which estimates “activity during the physical education class” and it is higher among male students. Both male and female students enjoy engaging in physical activity (ASF=4,27 i ASM=4,16), but no statistically significant gender differences were determined in total level of enjoyment in physical activity. For the part of the questionnaire PACES10 – “it benefits me when I am physically active” statistically significant gender difference in favour of female students was obtained. Research has determined that the total level of physical activity among both male and female students is related to their enjoyment in physical activities and that the physical activity enjoyment contributes to the explanation of total level of physical activity.