GSN is an abbreviation with several meanings:

• Game Show Network, an American television channel
• Genesis Sports Nutrition
• Global SchoolNet Foundation
• Global Seismographic Network , a component of the IRIS Consortium
• Government Security News , an industry magazine for U.S. Government security workers and decision makers which broke the story on Able Danger ^*
• GPRS Support Node part of the General Packet Radio Service system used in GSM and UMTS networks