Grit is a personʼs passion and perseverance that drive them to achieve long-term and meaningful goals. The purpose of this study was to identify practical resources that can affect single parentsʼ grit. Using the fourth-year panel data from the Korean Children and Youth Panel Survey 2018 (KCYPS 2018), descriptive statistics were produced and a correlation analysis was conducted for 284 single parents. Hierarchical regression analysis was also performed to explore the demographic factors, personal resources(psychological, lifestyle/health), and family resources(family relationships/child, economic) that affect single parentsʼ grit. First, the correlation analysis revealed that single parentsʼ grit had a significant correlation with age, education status, life satisfaction, happiness, self-esteem, smartphone dependency, physical activity time, frequency of breakfast consumption, household size, parentʼs satisfaction with childʼs school achievement and school adjustment, subjective family economic status, and private education expenses. Second, the hierarchical regression analysis revealed that education status, self-esteem, employment status, smartphone dependency, physical activity time, household size, parentʼs satisfaction with childʼs school achievement, and subjective family economic status were significant factors affecting single parentsʼ grit. Based on the research results, this study suggests directions for programs and policies to provide a stable environment for single-parent families to raise their children.