•
GCP Applied Technologies, an American chemical company •
GCP Infrastructure Investments, a British investment trust •
Global Centre for Pluralism, in Ottawa, Canada US. •
Global Charity Project, a student-run organization at Marymount University •
Global Carbon Project, an organisation that studies greenhouse gas emissions •
Globis Capital Partners, a Japanese venture capital firm •
Grand Central Partnership, a not-for-profit corporation that manages a business improvement area in New York City, US •
Greater Cambridge Partnership, a 'City Deal' in the UK since 2013
Political parties •
German Communist Party •
Ghana Congress Party, a political party of the Gold Coast • Grand Commonwealth Party, active in the
2021 Bahamian general election Military •
Commando Parachute Group (French: ''''), French special forces •
Group of Popular Combatants (Spanish: ''''), an Ecuadorean insurgence group ==Science and technology==