A gatekeeper is a person or entity that controls access to something, such as information, resources, opportunities, or physical spaces. They decide who is allowed entry or inclusion and who is excluded, effectively regulating participation or access based on certain criteria. Examples of gatekeepers include academic admissions officers, news editors, security guards, immigration officers, and executive assistants who manage access to decision- makers. The role of gatekeepers is significant in various domains like business, media, academia, and security, and while gatekeeping can protect standards and integrity, it can also reinforce barriers and inequalities.