Background: PMI Volunteers (Indonesian Red Cross) is a person engaged in humanity, who is willing to contribute his mind, energy and time to carry out his voluntary mission. Every PMI member has its own motivation to carry out their duties. One of the PMI Volunteer tugs is giving first aid to the emergency. Factors that influence voluntary motivation are factors of responsibility, achievement, employment, social environment relations, job security and incentives. Research Objective: to describe the factors that influence the motivation of PMI Yogyakarta volunteers in providing first aid to emergencies. Research Method: this type of research is quantitative by using cross sectional descriptive analytical method. The population of this study was 86 respondents KSR and TSR and were taken using probability sampling techniques with a simple random sampling design. Data collection uses a valid questionnaire (Pearson Product Moment: 0.361) and reliable (Cronbach Alpha: 0.999). The results of the study: the results of this study found that the highest respondents were ≤ 20 years old (50.0%) women (58.1%) with high school education (95.3%) Student employment status (86.0%) and unmarried marital status (93.0%). The description of the factors included in the category is sufficient responsibility (89.5%) factors of success (54.7%) factors of social environment relations (50.0%) factors of job security (90.7%) and incentive factors (67.4%). Conclusion: the conclusions in this study are the factors that influence the motivation of PMI Yogyakarta City volunteers, namely the factors of responsibility, achievement factors, social environment relationship factors, job security factors, and incentive factors. It is expected that the results of this study can be useful for the Religion PMI of Yogyakarta City as initial information to find out what factors influence the motivation of volunteers. In future studies can be developed by intervening or examining the relationship of each factor to motivation.