Collier's Encyclopedia (full title: Collier's Encyclopedia with Bibliography and Index) was a United States-based general encyclopedia published by Crowell, Collier and Macmillan.
Collier's Encyclopedia ("Ensiklopedia Collier"; judul lengkap: Collier's Encyclopedia with Bibliography and Index) adalah suatu  ensiklopedia umum berbasis di Amerika Serikat yang diterbitkan oleh Crowell, Collier dan Macmillan.