Ireland was predominantly monotheistic with Catholicism as the main religion. In recent decades, the country had become more multicultural. With increasing immigrant populations, undergraduate nursing students and nurses seeking to provide culturally competent care lacked specific knowledge regarding the death rituals of other religions. According to the literature, cultural encounters were key to furthering cultural awareness, knowledge, skills, and a desire to be effective, e.g., cultural competency. This study aimed to measure undergraduate nursing student general cultural awareness and specific knowledge of the death rituals practiced in the Republic of Ireland by three world religions: Christianity, Islam, and Hinduism. Two quantitative survey instruments were used along with questions related to demographics, education, and experience. A Cultural Awareness Scale (CAS), developed by Rew et al. (2014), was modified (mCAS), and a new knowledge questionnaire (KQ) was developed to measure nursing student knowledge of religious death rituals. Eleven religious experts assisted in drafting questions for the KQ. Six subject experts reviewed the KQ in-depth, and 68 students participated in a pilot test. Then, a quantitative descriptive cross-sectional study was undertaken with 414 undergraduate nursing students (of 5,050) from all five nursing programmes at eight (of 13) higher educational institutions across Ireland, representing all four provinces. Descriptive analyses and inferential tests were conducted. Undergraduate nursing students self- reported moderately high levels of general cultural awareness in each of the four mCAS subscales (general experience, general awareness/attitude, nursing classes and clinical instruction, and clinical practice). However, the KQ results indicated very low levels of knowledge related to religious death rituals. Over 200 students said they did not know the answers to 16 of 22 multiple-choice questions (Table 39), and 49% only answered five questions correctly (Table 40). Recommendations included cultural education during undergraduate nursing programmes mandated by the Nursing and Midwifery Board of Ireland.