The purpose of this phenomenological study was to uncover and understand international graduate students' experiences with "microaggressions" that stem from "native speaker fallacy;" microaggressions are the subtle discriminatory behaviors executed toward marginalized groups and native speaker fallacy is the false belief that only some "native" English speakers are effective teachers and users of the language. Put simply, this research aimed at unveiling the subtle language-based discriminations that international graduate students experience in their day-to-day lives in U.S. educational settings. To collect data for the study, the Critical Incident Technique (CIT) was utilized. CIT is a method that allows the researcher to systematically obtain rich and rare qualitative data from participants by encouraging them to reflect and report on "critical incidents" that they have experienced. Data was collected through online demographic survey, in-depth focus groups, and structured written reflections. Analyses of the data show that despite having had experienced language-based microaggressions and having had had emotional responses to them, the majority of the participants were unaware if they had the right as humans to feel violated due to those critical incidents. Eight themes, namely "Gatekeeping English," "Invisible Hierarchy," "Sounding 'Different'," "Othering," "Alienation," "Implicit Bias with Name and Color," "Department vs Critical Experiences," and "Nonaccountability" were identified in the data that show the deep-rootedness of native speaker fallacy in U.S. educational settings. I provide elaborate suggestions on how individuals and institutions can respond to microaggressions stemming from native speaker fallacy. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://bibliotheek.ehb.be:2222/en-US/products/dissertations/individuals.shtml.]