INTRODUCTION: Child abuse or neglect includes any type of physical, psychological/emotional, and sexual violence or neglect, carried out by a parent or other guardian. OBJECTIVE: The aim of the research was to investigate the knowledge of nursing undergraduate students about child abuse/neglect and to compare the level of knowledge regarding the gender, age, and year of study of the respondents. METHODS: 100 first-, second- and third year full-time and part-time nursing undergraduate students at the Faculty of Health Studies in Rijeka participated in the research, who voluntarily decided to participate in the research. Data were collected using an online questionnaire that contained 10 questions about general knowledge about child abuse/neglect and 10 questions about signs of abuse/neglect and actions to be taken in case of it. The survey questionnaire was created for the purposes of this research by the author of the same, and the questions had multiple answers, of which only 1 was correct, and the total knowledge was calculated according to the number of correct answers. The total number of correct answers was compared depending on gender and age groups by analysis of variance, and regarding the year of study by post hoc test. RESULTS: On average, the respondents had 6.63 correct answers with a standard deviation of 2.182 points. The lowest number of correct answers per respondent is 2, and the highest is 11. The respondents showed the most knowledge in recognizing signs of physical abuse, and the least knowledge in recognizing signs of emotional abuse. It was determined that there is a statistically significant difference in the knowledge of nursing students regarding the gender of the respondents, with women having a significantly higher level of correct answers than men. No statistically significant differences were found regarding the age of the subjects, but a statistically significant difference was demonstrated in the knowledge of nursing undergraduate students about child abuse/neglect depending on the year of study, with students in the 3rd year of study showing the highest level of knowledge about child abuse/neglect. CONCLUSION: Knowledge of nursing students about child abuse and neglect and its signs is low.