BACKGROUND: There is an increased prevalence of mental health problems in various population groups as a result of the COVID-19 pandemic and its consequences, especially regarding anxiety, stress, depression, fear, and sleep disturbances, require to be investigated longitudinally. OBJECTIVE: This study aimed to determine the impact that the COVID-19 pandemic had on the mental health of Nursing students, as well as to examine other associated factors such as anxiety, fear, sleep disturbances, and coping strategies. METHOD: This systematic review and meta-analysis were designed following the PRISMA guidelines and were registered in PROSPERO with code CRD42024541904. PubMed, Web of Science, CINAHL, and Scopus electronic databases were utilized. Keywords indexed in the MeSH thesaurus were used (COVID-19, nurs* student and mental health), following the Condition Context Population (CoCoPop) strategy. A total of 3866 studies were obtained of which 36 were selected for inclusion in the review. The Joanna Briggs Institute critical appraisal tool was used to assess the methodological quality of the selected studies, all of which were cross-sectional, finally including those with a cutoff point equal to or greater than 4 out of 8. RESULTS: The prevalence of total anxiety was found to be 33.6% in the meta-analysis. For depression, the prevalence was 37.92%, and for stress, it was 52.46%. The results of this study show increased levels of stress, anxiety, depression, fear, and sleep disturbances among Nursing students that coincide with the different waves of the pandemic, changes in the study methodology, and the increase or decrease in reports of cases of infection. A relationship is observed between variations in these variables and the implementation of protective measures and vaccinations in different countries. CONCLUSION: As the pandemic progressed, hygiene and prevention measures became more effective, and the lethality of the virus decreased. The prevalence of the negative psychological effects also decreased from the onset in 2020 until the end of 2022. Due to the impact of the pandemic on global health, preventive measures should include personal, family, emotional, economic, educational, professional, and mental health approaches.