en تخصصي Special پژوهشي Research <strong>Background</strong>: Health-promoting lifestyle as an important factor in psychological and physical well-being improves the quality of life. A health-centered approach to life can be facilitated through several social components, such as social and cultural capital. This study aimed to determine the relationship between social capital and the health-promoting lifestyle of nursing students.<br> <strong>Methods</strong>: It was a descriptive correlational study. A total number of 200 undergraduate nursing students of Iran University of Medical Sciences were recruited using stratified proportional to size sampling. Also, data were collected by the Walker health-promotion lifestyle profile-II and the Onyx and Bullen social capital questionnaire and analyzed using descriptive statistics, the t test, the analysis of variance, and the Pearson correlation coefficient, in SPSS V. 20.<br> <strong>Results</strong>: The mean scores of social capital and health-promoting lifestyle was 2.44 and 2.47, respectively. Social capital was significantly associated with the health-promoting lifestyle (P<0.001). Moreover, economic status was significantly correlated with social capital (P=0.004). Also, a significant relationship was observed between employment status and health-promoting lifestyle (P=0.002).<br> <strong>Conclusion</strong>: As a step toward having healthy nursing students, the officials, educational policymakers, and faculty members are suggested to take appropriate interventions to promote their social capital. Social capital, Health promotion, Lifestyle, Nursing students 223 230 http://jccnc.iums.ac.ir/browse.php?a_code=A-10-93-18&slc_lang=en&sid=1 Maryam Hashemipour ma.hashemipour@gmail.com 10031947532846006224 10031947532846006224 No epartment of Health and Food Security, School of Allied Medical Sciences, Iran University of Medical Sciences, Tehran, Iran. Marhamat Farahaninia arahaninia.m@iums.ac.ir 10031947532846006225 10031947532846006225 Yes Department of Community Health Nursing, School of Nursing and Midwifery, Iran University of Medical Sciences, Tehran, Iran. Zahra Kashaninia kashanininia.z@iums.ac.ir 10031947532846006226 10031947532846006226 No Department of Pediatrics & Mental Health Nursing, School of Nursing and Midwifery, Iran University of Medical Sciences, Tehran, Iran. Hamid Haghani haghani511@yahoo.com 10031947532846006227 10031947532846006227 No Department of Biostatistics, School of Public Health, Iran University of Medical Sciences, Tehran, Iran.