The present study aims to the examination of mindfulness and impulsiveness in university student-athletes in terms of sports injury development history. A total of 181 athletes, 56 female, and 125 males, were included in the study. The Sociodemographic Information Form, the short form of the Barratt Impulsiveness Scale, and the Mindfulness Inventory for Sport were applied to the participants. In conclusion, the athletes with a history of injuring another athlete had a higher score average in impulsiveness scale. The total scores from the overall mindfulness inventory did not differ significantly based on the status of having injured another athlete. It was observed that the athletes who experienced severe injury had a lower score average in the overall impulsiveness scale compared to the athletes who experienced a moderate injury. No significant difference was observed in the score averages from the overall mindfulness scale based on injury severity. Among the most notable results of the present study are the positive relationship between motor impulsiveness and injury frequency and the negative relationship between mindfulness and the total of the impulsivity scale and all its sub-dimensions.