This study aimed to determine the relationship between the teaching efficacy of physical education teacher candidates and their teaching-learning conceptions and to determine the validity of the level of teaching efficacy predicting teaching-learning conceptions. The study group consisted of 433 teacher candidates studying in physical education and sport teaching departments. The study revealed that teacher candidates' teaching efficacy levels and their adoption of constructivist conceptions were high and that teacher efficacy levels were important predictors of teaching-learning conceptions.