CORE
- CORE (Community Organized Relief Effort)
- CORE (research service)
- CORE Project
- CORE-OM
- Canadian Ombudsperson for Responsible Enterprise
- Center for Operations Research and Econometrics
- Center for Organizational Research and Education
- Central Organisation for Railway Electrification
- Chicago Teachers Union
- Collective Oregon Eateries
- Committee on Operating Rules for Information Exchange
- Congress of Racial Equality
- Coordenadoria de Recursos Especiais
- Intel Core
- Lutheran CORE
- Undertale
- Undertale Soundtrack