Theory and research suggest that social factors, self-perceptions, affect, and reasons for participation contribute to motivated behavior in the sport domain. Parents and peers are particularly important social agents (Brustad & Partridge, 2002), while perceived competence, enjoyment, stress, and self-determination are key motivation variables (Weiss & Ferrer-Caja, 2002). The purpose of the current research was to examine if social and motivation variables predict whether or not youth soccer players remain in the organized soccer setting. It was hypothesized that athletes who perceive more positive parent and peer relationships in soccer and report a more positive motivational profile would be more likely to continue soccer participation the next year. One-year after athletes completed reliable and valid measures of social relationships (perceived peer acceptance, friendship quality, mother relationship quality, and father relationship quality) and motivation (soccer enjoyment, stress, perceived competence, and self-determined motivation) coaches were contacted to determine which athletes continued to play organized soccer. Follow-up participation data were obtained for 155 (77 male, 78 female) of the 186 participants who completed the initial assessments. The athletes ranged in age from 10 to 14 years (M = 11.7, SD = 1.0) and were predominantly White (92%). There were 134 athletes who continued to play soccer and 21 athletes who did not continue. Logistic regression analyses were conducted to test whether social and motivation variables, respectively, predicted soccer continuation. The social relationship model predicted continuation, χ² (4) = 10.7, p < .05, Nagelkerke’s R²  = .13. Athletes with lower relationship quality with mother (Odds Ratio = .35, p < .05) and higher relationship quality with father (Odds Ratio = 3.19, p < .01) were more likely to continue playing soccer. The motivation model also predicted continuation, χ² (4) = 9.79, p < .05, Nagelkerke’s R²  = .12. Athletes with higher perceived competence (Odds Ratio = 3.38, p < .01) were more likely to continue playing soccer. The father relationship and perceived competence findings are consistent with existing motivation theory and research, suggesting that social and motivation variables predict activity choices. Future research is warranted that explores the role of other social agents (e.g., coaches, non-sport peers) in continuation decisions, the mechanisms by which self-perceptions influence youth continuation decisions, and the unexpected mother relationship finding.