The aim of this research was to reveal whether the coach-athlete relationship is a determinant of athletes' motivation. 312 (63.5%) males and 179 (36.5%) females as a total of 491 athletes from team and individual sports voluntarily participated to the research. Mean age of the participants' was found to be 19.11±2.70. The Coach-Athlete Relationship Questionnaire (CART-Q) and Sports Motivation Scale (SMS) were used as the data collection tools. For the data analyses; descriptive statistics, Pearson's correlation and multiple regression analyses (enter method) were used. Level of significance was determined to be .05. The results showed that intrinsic motivation was significantly correlated with closeness (r = .235), commitment (r = .240) and complementary (r = .153). Also, extrinsic motivation was significantly correlated with closeness (r = .346), commitment (r = .307) and complementary (r = .270). The results of the regression analysis revealed that closeness (β = .197, p = .009) and commitment (β = .197, p = .006) were the significant predictors of intrinsic motivation [F (3, 487) = 12.539, p = .000, R2=.07] and that extrinsic motivation was significantly predicted by closeness (β = .283, p = .000), [F (3, 487) = 23.296, p = .000, R2=.13]. As a conclusion, the results of this