Objectives: to analyze association between burnout and sociodemographic and occupational features of military nursing workers. Methods: a cross-sectional study, developed in five military hospitals of the Army of Rio Grande do Sul State, among 167 workers from military nursing from December 2015 to May 2016. Sociodemographic and occupational questionnaires and the Maslach Burnout Inventory were applied. For the analysis, it was used descriptive statistics, Chi-Square Test and Poisson Regression. Results: the majority of participants were female; temporary military personnel, nursing technicians, with a median age of 34 years old. Burnout was related to the variables: Military Health Organization, time of practice in military nursing and accomplishment of leisure activities. Conclusions: burnout assessment may contribute to the Brazilian Army Command in organizing plans for prevention and handling of occupational diseases in military nursing, improving quality of life at work.