Guinea Bissau (casual abbreviation G.B.), a country in West Africa

Gabon (FIPS 10-4 and NATO (obsolete) country code: GB), a country in Central Africa

Gambia (ICAO airport designator prefix and WMO country code: GB), a country in West Africa

The Green Bay Packers, a National Football League Team

Ghostbusters, a 1984 comedy film

Garth Brooks, a country music singer

Game Boy line, a line of handheld video game consoles

Great Britain, an island in Europe

Sarin, nerve gas (NATO designation: GB)

Gnarls Barkley, an alternative hip-hop group.

Girls' Brigade, a Christian organization for girls

Gorilla Biscuits, a hardcore punk group.

Gigabyte (GB), a unit of information used, for example, to quantify computer memory or storage capacity

Guobiao, Chinese National Standards

GunBound, a computer game

GB Airways

Government and binding, theory by Noam Chomsky

ABX Air (IATA airline designator: GB)

University of Wisconsin-Green Bay

GB Glace, a Swedish ice cream company

Griesedieck Brothers beer

Games behind, in sports scores

Gigabit (Gb), a unit of information used, for example, to quantify computer memory or storage capacity

Gardner Bender, a manufacturer of professional electrician's tools and supplies

Note that the ISO 3166 country code GB stands for the United Kingdom of Great Britain and Northern Ireland and not the island of Great Britain.

Gordon Brown, the British Prime Minister

George W. Bush, the US President

Gb (digraph), a digraph in the Latin alphabet

Gain-bandwidth product (GB or GBW), product of amplifier midband gain and bandwidth (e.g., unity-gain frequency of frequency compensated operational amplifiers)

GB2312, an encoding scheme for rendering Simplified Chinese characters.

Glen Benton, Bassist/Vocalist of Death Metal band Deicide (band)