The study aimed to investigate the ethical issues experienced by military interpreters in conflict zones. Qualitative data collection and analysis methods were used to answer the research question. Fifteen professional military interpreters working for peacekeeping mission and U.N. agencies in Yemen made up the study sample, randomly selected. A focus group discussion tool is used to identify the ethical issues that military interpreters experience when working in conflict zones. This study was carried out during the ongoing armed conflict in Yemen 2020–2021. The study results showed that military interpreters in conflict zones faced several ethical issues, including major and minor issues, such as confidentiality, accuracy and competency, impartiality, neutrality and integrity, social and cultural norms, gender bias, etc. The study concluded that military interpreters experienced several ethical issues that may impede the progress of their work. These findings led to several recommendations for all conflict parties, peacekeeping missions, U.N. agencies, universities, and research centres.