Coaches' knowledge, attitudes, and beliefs about mental health – the construct of mental health literacy (MHL) – affects teams' mental health (MH) climates and the early detection, referral, and treatment of athletes' MH concerns. Thus, assessing collegiate coaches' MHL, and the factors related to its presence, is critical. Using the Mental Health Literacy Scale, I surveyed 1,571 NCAA coaches (Mage = 37.5 years, SD = 11.8; 51.4% cisgender female; 85.9% White) regarding their MHL and related demographic and MH-experience factors, including their belief regarding MH and sport performance. Overall, 99.9% of the coaches believed that athletes' MH affected their sport performances. Through hierarchical regression analyses, I found that coaches' exposure to MH treatment, their perceived helpfulness of MH treatment, their gender (i.e., woman), number of years coaching (i.e., fewer years), and NCAA Division in which they currently coach (i.e., DIII) were related significantly to their MHL, explaining 15.5% of variance. Coaches' race/ethnicity was not related to MHL. These findings provide insight on hiring and educating coaches, and hiring appropriately trained and licensed MH and sport psychology professionals. Specifically, coach education should be focused and practical: signs and symptoms of common MH concerns disorders; the ubiquity of MH concerns among athletes; how to talk to athletes about MH and suicide; and how to make timely, efficient, and respectful referrals following that system's specific procedures. Such education would be particularly beneficial for male coaches or those who have been coaching longer.