What does OPAC stand for?

Operation of Aircrafts

Operations Planning Advisory Committee

Opotiki Packing and Coalstorage

Orlando Performing Arts Wenter

Osteopathic Political Action Committee

Office Proficiency Assessment and Certification

Orpheum Performing Arts Center

Online Public Access Catalogue

An online public access catalogue (often abbreviated as OPAC or simply library catalog) is an online database of materials held by a library or group of libraries. Users search a library catalog principally to locate books and other material available at a library.

Operations of Aircraft

Oil Producing Arab Countries