Background: Young Arab American women are at risk for cardiovascular disease, but there is limited data on their physical activity (PA) engagement. Objectives: The aim of this study was to examine the relationship between PA and its correlates in young Arab American women. The objectives of this study were to: (1) describe self-reported lifestyle PA behaviors of young Arab American women and (2) examine the relationship between their self-reported lifestyle PA, device-measured lifestyle PA (combined moderate /vigorous and steps), and potentially associated factors (demographics, physical measures, individual factors, and behavior cognition factors). Methods: This cross-sectional study was conducted with women 18 to 35 years of age and Arab American (n = 50) in the Midwest Region of the United States. Participants wore ActiGraph GT3X-BT monitors for 7 days; self-report measures included the International Physical Activity Questionnaire, demographics, acculturation, discrimination, religiosity, self-efficacy, and social support. Results: The mean age of participants was 25.5 years ( SD: 5.5; range: 18-35). Per ActiGraph, the average daily steps were 5946 ( SD: 2783); only 24% met the moderate-intensity PA guidelines. Self-efficacy was significantly associated with increased moderate-to-vigorous PA ( B = 0.37; P = .012). Conclusion: The average daily steps for the young Arab American women in this study were of low active classification. More than 75% of the women failed to meet the recommended weekly moderate /vigorous PA guidelines. Our study supports the importance of targeting and tailoring PA interventions on young Arab American women who have low self-efficacy for overcoming barriers to lifestyle PA.