The present study provides a unique contribution to the literature by offering the first study to examine the prevalence of mental ill health and mental wellbeing of professional Counter-Strike athletes. The sample consisted of 51 current Counter-Strike professionals (Mage = 23.22, SD = 4.7 years; Male = 48, Female = 3) representing 17.1% of all registered Counter-Strike professionals. An online questionnaire battery was administered via Qualtrics. We found that one quarter of our sample reported moderately severe (15.7%) and severe (9.8%) symptoms of depression using the PHQ-9, over three quarters (82.4%) reported symptoms of anxiety/depression using the GHQ-12, over half (54.9%) reported psychological distress using the distress screener, and nearly three quarters (72.5%) reported low mental wellbeing using the SWEMWBS. Our findings suggest that greater importance should be placed on screening and intervention support by both performance and clinical practitioners to facilitate mental health within the esports ecosystem.