NSWC may refer to:
National Security and War Course, at the National Defence University, Pakistan Neighbourhood and Worker's Service Centre, a pro-democracy political group in Hong Kong United states military and intelligence community National SIGINT Watch Center, original name of the United States National Security Operations Center Naval Surface Warfare Center, part of United States Naval Sea Systems Command operations United States Naval Special Warfare Command, the Naval component of United States Special Operations Command
See also National Security Whistleblowers Coalition (NSWBC), a non-profit alliance of whistleblowers