Background: The military nursing profession is one of the 40 most stressful professions worldwide, meaning that nurses are under lots of job stress (JS). Objectives: This study aimed to investigate JS among military nurses. Methods: This study was conducted using a systematic review. At first, all the papers related to keywords (JS, occupational stress, and military nurses) were searched in the following databases: Google scholar, PubMed, Embase, CINAHL, Psycinfo, and Cochrane Database of systematic reviews from 2011 to 2020. Thereafter, all the papers related to JS among military nurses were selected. In terms of the inclusion criteria, the papers related to JS among military nurses were analyzed (n=12). Predefined inclusion and exclusion criteria were as follows: papers related to JS among military nurses, papers published in Persian or English language, types of papers as being original, and available free full text for all the papers. Results: In the initial search, 120 papers were found, of them, after reviewing the titles and abstracts of articles and removing repetitive and non-related, 30 possible related articles were investigated. Of these, 18 papers were omitted from the abstract because of lack of access to the original article. Finally, 12 papers were included in this study. In general, the results of these studies showed that the experience military nurses in warfare that help to identify and analyze problems during Wartime, as well as adaptation facilitating and better coping of health care providers in unusual and critical conditions. Conclusion: The study showed that almost whole of papers on JS among military nurses highlighted similar findings regarding stressors among military nurses. Also, they experience a lot of difficulties during wartime, which can be used to identify problems and provide appropriate solutions in similar conditions to generate knowledge in the field of training and preparing military nurses to face critical situations.