In team sports, achievement motivation is a crucial psychological concept that refers to the effort, determination, and desire for performance shown by athletes in achieving their set goals. Both individual characteristics and environmental factors influence the development of achievement motivation. Among these environmental factors, coach support stands out as a key element affecting athletes' motivation levels. Coaches are not only individuals who impart technical and tactical knowledge, but also important guides who direct, support, and help athletes improve their performance throughout their development process. Coach support in team sports encompasses various dimensions, including communication, feedback, encouragement, building trust, and understanding athletes' needs. Positive support from coaches can increase athletes' self-confidence, strengthen their team cohesion, and contribute to their ability to sustain their efforts towards success. Furthermore, coaches exhibiting a fair, consistent, and supportive approach plays a significant role in fostering positive attitudes towards sports among athletes. Coach support is particularly important in team sports, enabling individuals to work towards common goals and perform collaboratively. This section examines the importance of coach support in terms of achievement motivation in team sports. The effects of coaching support on athletes' motivation, performance, and team cohesion were evaluated. It was emphasized that coaching support is a crucial element in developing motivation for success and ensuring sustainable athletic achievement in team sports.