The purpose of this quantitative correlational-predictive study was to examine Resiliency and Grit as potential predictors of Academic Success among nontraditional students at a community college in Arizona. The foundation for this study was provided by resilience, grit, and self-determination theories and related concepts. The study was conducted with a convenience sample of N = 131 nontraditional students recruited from a community college in Arizona. The nontraditional students were 25 or older. Such students represent the fastest-growing age group in the population of community college students, and their attrition rate is higher than that of traditional, younger students. Three research questions asked to what extent Resiliency and Grit predicted nontraditional students' Academic Success (operationalized as self-reported GPA), first considered together and then individually. The survey data were analyzed using the classic model for multiple linear regression, with both predictors entered together into the regression equation. The results indicated a statistically significant positive relationship between the two predictors considered together and GPA, F (2, 128), = 4.760, p = 0.010, adj. R[superscript 2] = 0.055. However, only Resiliency was found to be a statistically significant predictor when considered individually, [beta] = 0.264, t = 2.563, p = 0.012, r[subscript partial] = 0.220. These findings point to the importance of emphasizing resiliency in mentoring nontraditional community college students and to the need for pre-service preparation and in-service training for faculty, to enable them to effectively provide resiliency mentorship to nontraditional students. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://bibliotheek.ehb.be:2222/en-US/products/dissertations/individuals.shtml.]