a b s t r a c tIt was hypothesized that there would be significant differences in mental toughness among athletes of different: (a) achievement level, (b) gender, (c) age, (d) sporting experience, and (e) sport type (team vs. individual and contact vs. non-contact sports). Participants were 677 athletes and consisted of sports performers competing at international (n = 60), national (n = 99), county (n = 198), club/university (n = 289), and beginner (n = 31) levels. Results revealed a significant relationship between mental toughness and gender, age, and sporting experience. However, achievement level and the type of sport an athlete participated in was not significantly associated with mental toughness.