This final paper deals with questioning the knowledge and attitudes of nursing students about the breastfeeding process. The paper is organized as research amongst nursing students, which should determine the attitudes, levels of knowledge, and possible differences on the aforementioned topic. The research process, conducted by a questionnaire, involved 65 full-time students aged 18 to 30 in the first and third years of the undergraduate professional study of nursing at the Faculty of Health Studies in Rijeka. It contained questions determining socio-demographic data of respondents, statements intended to explore respondents' attitudes toward breastfeeding and information regarding their education. The intent was to question knowledge about breastfeeding, breastfeeding difficulties, breastfeeding in public areas, and the correlation between breastfeeding and Covid-19, all of which measured knowledge levels about breastfeeding. Once data was submitted and processed, the analysis found that 80.0% of respondents were female, whilst 20.0% of respondents were male, of whom 46.2% were in their first year and remaining 53.8% were in the third year of an undergraduate professional study of nursing. Notable differences were found, in respect to the observed years of study, in individually selected statements (acquired knowledge about breastfeeding, assisting in the breastfeeding process, etc.) and a higher share of the agreement among third-year students, which affirms a positive attitude towards breastfeeding. At the same time, minor differences were seen in the knowledge of first and third-year students, although, as assumed, the level of knowledge was still slightly higher in third-year undergraduate students. The research demonstrated that the theoretical understanding (of the before-mentioned topics) met the envisioned assumptions in both first, and third-year students. Finally, the level of readiness to apply and implement practical knowledge is, as assumed, higher among third-year students.