| Rank | Abbreviation | Meaning |
|---|
| ***** | REEC | Revista Electrónica de Enseñanza de las Ciencias
| |
| ***** | REEC | Reach Ethylene Oxide and Ethlylene Glycols Consortium
| |
| ***** | REEC | Robert E. Ellsworth Correctional
| |
| **** | REEC | Regional Environmental Education Center
| |
| **** | REEC | Re-Entry Court
| |
| **** | REEC | Real Estate Executive Council
| |
| **** | REEC | Regional Energy Efficiency Centre
| |
| **** | REEC | Réseau Européen d'Etudes Canadiennes
| |
| **** | REEC | Rare Earth Elements and Compounds
| |
| *** | REEC | Revista Eletrônica de Engenharia Civil
| |
| *** | REEC | Real Estate Equities Corporation
| |
| ** | REEC | Riverina Environmental Education Centre
| |
| ** | REEC | Revista Espagnola de Educacion Comparada
| |
| ** | REEC | Real Estate Education Center
| |
| * | REEC | Reynolds Electrical and Engineering Company
| |
| * | REEC | Regional Earth's Environment Center
| |
| * | REEC | Russian and East European Center
| |
| * | REEC | Rural Environment and Empowerment Center
| |
| * | REEC | Regional Environmental Emergencies Coordinator
| |
| * | REEC | Regional Environmental Enrichment Conference
| |
| * | REEC | Regional Dairy Extension and Education Committee
| |
| * | REEC | Rat Esophageal Epithelial Cells
| |
| * | REEC | Rogers Environmental Education Center
| |
| * | REEC | Rumbalara Environmental Education Centre
| |
| * | REEC | Revista Española de Educación Comparada
| |