Background Ensuring morally competent nurses depends on many factors, such as environmental, social, political, and cultural. However, several inadequacies in nursing education have been documented, and no common framework has been established for how nursing ethics should be taught in undergraduate education. Research questions What are the different approaches across nursing programmes established in teaching ethics? What are the main similarities and differences across programmes facilitating a common understanding in developing a curriculum capable of preparing a morally competent nurse? Research (...) design International comparative education study in five steps: (1) formulating the initial question; (2) defining the units of comparison; (3) determining the variables of comparison; (4) describing the findings; (5) interpreting the findings. The comparative variables were identified, extracted, and populated in a piloted grid. Participants Six universities were purposefully selected by the Promoting a Morally Competent Nurse project partners for their nursing education curricula as delivered in 2022–2023. Ethical considerations No ethical approval was required, given no human participants and public data regarding nursing curricula. Findings Variability emerged in the terminologies used in naming the courses, the numbers of credits and hours devoted to teaching ethics, when the courses are delivered (since the initial semesters of nursing education or concentrated in the final years), and their main modes of delivery (a single or separate module or integrated across the curriculum). Contents have some similarities, whereas the teaching methods varied and included (or not) explicit connections with clinical practice. Attendance is mandatory in all courses. The assessment methods used varied from knowledge-based to more competence-based approaches involving multidimensional strategies. Conclusions This comparative study explored similarities and differences across nursing programmes in six different European countries. The reviewed ethics curricula lack significant clarity, and they offer important areas to consider for future development. Issues emerged regarding terminologies, learning workloads, when to deliver, how to deliver, the main contents, and the teaching and assessment methods that merit further discussion. (shrink)