The aim of this research was to study the prevalence of nonaccidental violence among elite athletes in Finland, the predisposing factors to violence, and its consequences for mental well-being and ill-being. A total of 2,045 Finnish athletes participated in the study. Logistic and linear regression analyses were used to analyze the associations. The results indicated that 38.8% had experienced psychological abuse, 14.7% bullying, 13.3% gender-based harassment, and 5.5% sexual harassment. Female and younger athletes reported more violent experiences than male and older athletes. A team’s safe atmosphere and readiness to act protected athletes from nonaccidental violence, whereas the coach did not play a role. Nonaccidental violence, particularly psychological abuse, was associated with reduced mental well-being and increased ill-being. Our results suggest that it is worth investing in the team’s mutual relationships and safe cooperation when ensuring appropriate behavior and preventing nonaccidental violence among athletes.