This paper explores the issue of sexual harassment as a global issue of concern to all participants in the English as a Foreign Language (EFL) world. It applies the principles of Critical Applied Linguistics to delineate the power-inequality relationships that are inherent in most cases of sexual harassment. Specific cases and vulnerable populations of students and teachers are outlined for a wide range of locales including, Australia, Canada, Korea, the U.S. and the U.K. Final sections focus on Japan and on a particularly at-risk group: language conversation school instructors. Considerations of the extent of sexual harassment reveal the need for decisive and comprehensive policies and interventions by bystanders everywhere to tackle this severe social ill.