This study investigated the relationship between suppressing thoughts about HIV risk and several outcomes related to HIV risk, including sexual risk behavior and HIV prevention service use, in men who have sex with men (MSM). Synthesizing the ironic processing theory (D. M. Wegner, 1994) with a cognitive escape paradigm (D. J. McKiman, D. G. Ostrow, & B. Hope, 1996), it was hypothesized that thought suppression might increase risk by leading MSM to "escape" from sexual safety norms and engage in risky sex behaviors and, via a paradoxical process, increase future use of community prevention services. Results from a sample of MSM (N = 709) indicated that thought suppression was positively related to concurrent sexual risk behavior and to future use of prevention services.