Introduction. The carcinogenic ultraviolet range of sunlight plays a major role in the development of malignant skin tumours with a steadily increasing incidence. It shows a significant upward trend in our country, with 2,742 new cases registered in 2016, nearly 15% of which were under 40 years of age. With conscious behaviour and the use of sunscreen products, the incidence of skin tumours can be reduced. The aim of the study is to assess the Hungarian population’s knowledge about skin cancer and attitudes towards sun protection.Methods. Quantitative cross-sectional study was conducted in a dermatology clinic and among 7th and 8th-grade students and 11th and 12th-grade students of two high schools. The self-administered questionnaire used in the study included questions on socio-demographic data, addictions, skin type, family history of skin cancer, sunburns, sunbathing habits, sunscreen use, knowledge about sun protection and skin cancer, screening and self-testing.Results. 83.9% of respondents (n=356) have experien- ced sunburn 3 or more times, and 27.8% use sunscreen regularly (n=118). 62.7% of respondents (n=266) have never had a skin cancer/melanoma screening. A significant association was found between education, gender and sunscreen use (p<0.001). A significant association was also found between risky behaviour and going to a tanning salon (p<0.001).Conclusions. The Hungarian population has a lack of knowledge about skin cancer. The results indicate that more emphasis should be placed on increasing the knowledge and awareness of the population about sun protection and on developing good habits, starting at the primary and se- condary level.