• Government Investment Pool
• Gross Internal Product
• The G7/8 Global Inventory Project studied employment in the information economy.
• The Gibraltar pound, the currency issued by the government of Gibraltar.
• Gastric inhibitory peptide is a digestive hormone
• The Global Internet Project
• In weblog circles, a "Gratuitous Icon Post"
• GSM Interworking Profile (DECT): a DECT profile allowing GSM handsets to use DECT base stations.
• Global Initiative on Psychiatry
• GIP Gizelle interface process - generic Avaya sub-processing module
• The Graph isomorphism Problem
• GIP, the ICAO code for the airline Air Guinee Express

Gip is also a community in the United States:

• Gip, West Virginia

Gip or GIPPY is also an informal verb meaning "to leave or betray". It is used in parts of Ireland and the American South.