| Acronym | Definition |
|---|
| GCPI | Geographic Practice Cost Index |
| GCPI | Gironde Courtage Prêts Immobiliers (French: Gironde Brokerage Real Estate Loans) |
| GCPI | Gestion et Conception de Projets Industriels (French: Management and Design of Industrial Projects) |
| GCPI | Gold Country Piano Institute (Nevada City, CA) |
| GCPI | God's Child Project International (Bismarck, ND, USA) |
| GCPI | Ghana Center for Public Integrity (Accra, Ghana) |
| GCPI | General Committee of Public Instruction (India) |
| GCPI | Global Customer Partner Initiative (Nortel Networks) |
| GCPI | General Council for the People of Iraq (political party) |