Gun Aiming Point, a point behind a battery of guns used to aim in artillery

Income gap, disparities in the distribution of economic assets and income

Gap (clothing), a United States-based fashion chain.

Digital gap, differences in regular effective access to digital and information technology

Achievement gap, the observed disparity of educational measures between various groups

Güneydoğu Anadolu Projesi, a land reform project in Turkey

The Gap Cycle, a science fiction story, told in a series of 5 books, written by Stephen Donaldson

a place where a driver must use another road to travel between two identical designated sections of Interstate Highway that do not connect

Gamer Advisory Panel, a membership from Sony Computer Entertainment

Generally Accepted Accounting Principles, the standard framework of guidelines for financial accounting

"Mind the gap", a safety warning for users of the London Underground and the Sydney CityRail about the space between the train and the platform

Glyceraldehyde 3-phosphate dehydrogenase, an enzyme important in both the Calvin cycle and glycolysis

Darién Gap, a large swath of undeveloped swampland and forest separating Panama and Colombia

Gap Band, a U.S. R&B, funk and soul music group from Tulsa, Oklahoma

Government Accountability Project, a nonprofit organization

Missile gap, the perceived discrepancy between the ballistic missile arsenals of the USSR and the U.S. during the Cold War

Great Ape Project, an international organization that campaigns to have the United Nations endorse a Declaration on Great Apes

Generation gap, a wide difference in cultural norms

Good Agricultural Practices, any collection of value-based agricultural practices

The Gap, Queensland, a suburb in Brisbane, Queensland, Australia

Marriage gap, disparities between those who are married and those who are single

Gap, Hautes-Alpes, a town in France

Diocese of Gap, a Roman Catholic territory pertaining to Gap, Hautes-Alpes

.45 GAP, the "Glock Automatic Pistol" cartridge designed by Ernest Durham

GAP, the license plate code for Garmisch-Partenkirchen, Germany

Glyceraldehyde 3-phosphate, a 3-carbon molecule metabolite important in both glycolysis and the Calvin cycle

Gap, Pennsylvania, a town in the United States

Group of Applied Physics, a department of the University of Geneva

Genocide Awareness Project, a movable pro-life display

Gap (landform), a way through high land, often carved by a river

Gap Mangione, jazz pianist and bandleader

Credibility gap, a 1960s political term used to describe public skepticism about the Lyndon Johnson administration's Vietnam War statements

Gallium(III) phosphide, a semiconductor material

Parasitic gap, a grammatical construction

Groups, Algorithms and Programming, a computer algebra system for computational discrete algebra

El Boquete, a 2006 Argentine film (English: The Gap)

Gaap, a mighty Prince and Great President of Hell in demonology

GTPase activating protein, a biochemical compound

Gap analysis (conservation), a geographic conservation model

Gäp, the Tatar-based cant language

Generic access profile, an interoperability protocol used in wireless telephony

The Gap, New South Wales, a spectacular ocean cliff at Watsons Bay, New South Wales, Australia

Gap FC, a French football team

Loughborough Gap, a disused section of the Great Central Railway in Loughborough, England

Gruppi di Azione Partigiana (Partisan Action Group, a terrorist group located in Italy and active during the "Years of Lead"

Guyana Action Party, a political party in Guyana

The Gap (album), music by the Chicago-based band Joan of Arc

Gap (ecology), a spacing between large trees in a forest

Opportunity gap, a market opportunity or the lack of equal opportunity

Gender gap, psycho-social, economic, and child custody differences

Grandmother Gap is a mountain pass in North Carolina

Seismic gap, a segment of an active geologic fault

Generating Application Propositions, creating implementation examples as templates

Saskatchewan, a Canadian province referred to as The Gap between Alberta and Manitoba

Fulda Gap, an area in Germany of strategic importance during the cold war