DescriptionTourette syndrome (TS) is a neurological condition consisting of motor and vocal tics that commonly presents with psychiatric comorbidities. Few studies have examined the knowledge of psychotherapy providers with regard to TS and its treatment. The present study surveyed 88 clinicians with varying types and amounts of training and compared these variables with TS knowledge using a brief knowledge quiz derived from Marcks and colleagues (2004). Significant bivariate predictors of total score on the quiz included participant age (r = .25, p = .03), how long participants have practiced in the field (r = .31, p = .01), confidence in treating TS (r = .30, p = .01), self-reported expertise in TS (r = .35, p < .01), a doctoral degree (r = .47, p < .01), awareness of national TS organizations (r = .39, p < .01), awareness of local TS organizations (r = .27, p = .01), awareness of Habit Reversal Training (HRT; r = .43, p < .01), and past professional development activities related to TS (i.e. internet research, reading books on TS, attending workshops; r = .37, p < .01). In a hierarchical linear regression model, a doctoral degree was found to be the strongest predictor of knowledge. Implications for consumers of therapy and clinical training organizations are discussed.