The aim of this study is to present the connection between parental physical activity and the physical activity of their children based on conducted research. Physical activity is a human need that has many benefits, both for health and for motor development, psychological components, and cognitive development. Parents play a significant role in promoting children's physical activity. They act as support and key factors in engaging in sports. Research shows that children whose parents engage in sports are more likely to participate in sports themselves, either voluntarily or encouraged by their parents. Parents' attitudes towards physical activity also greatly influence the formation of children's attitudes. Nowadays, children are getting involved in physical activities at an earlier age while still being highly dependent on their parents. Parents should keep in mind that children participate in sports for fun and it is unnecessary to pressure them and insist on winning. The research was conducted using an online survey method. The study involved 338 participants from different areas of Croatia, with different genders, ages, levels of employment, and education. The survey included socio-demographic data of parents and their children, as well as statements that respondents ranked from 1 to 5 on a Likert scale. The results showed that there is a weaker connection between parental physical activity and the physical activity of children, and that children are much more physically active. Differences in physical activity and attitudes towards it are visible based on the criteria of parents' education level, and in children based on the criteria of age. Data analysis concluded that parents have an influence on children's physical activity, especially among younger children.