Database Titles beginning with O
| Title | Connect Link | Details Link |
|---|---|---|
| O'Brien's Encyclopedia of Forms (WestLawNext) | Connect | Details |
| OAIster (OCLC) | Connect | Details |
| Oceanic Abstracts (CSA) (ProQuest) | Connect | Details |
| OECD iLibrary | Connect | Details |
| OMIM Online Mendelian Inheritance in Man | Connect | Details |
| Online Archive of American Folk Medicine | Connect | Details |
| Online Geographical Bibliography (GEOBIB) | Connect | Details |
| Open Access Digital Library | Connect | Details |
| Open Access Theses and Dissertations (OATD) | Connect | Details |
| Open Music Library | Connect | Details |
| ORBIS (Bureau Van Dijk) | Connect | Details |
| Orders in Council (Government of Canada) | Connect | Details |
| Orlando Women's Writing in the British Isles | Connect | Details |
| Orphanet | Connect | Details |
| OSIRIS (Bureau Van Dijk) | Connect | Details |
| Our Roots: Canada's local histories online | Connect | Details |
| Oxford Art Online | Connect | Details |
| Oxford Bibliographies Online - Chinese Studies | Connect | Details |
| Oxford Bibliographies Online - Classics | Connect | Details |
| Oxford Bibliographies Online - Linguistics | Connect | Details |
| Oxford Constitutions of the World | Connect | Details |
| Oxford Dictionaries | Connect | Details |
| Oxford Dictionary of National Biography | Connect | Details |
| Oxford English Dictionary (OED) | Connect | Details |
| Oxford Handbooks Online (Oxford) | Connect | Details |
| Oxford History of Western Music | Connect | Details |
| Oxford Journals Online | Connect | Details |
| Oxford Music Online | Connect | Details |
| Oxford Reference | Connect | Details |
| Oxford Research Encyclopedia of Asian History (Oxford University Press) | Connect | Details |
| Oxford University Press eBooks (Oxford Scholarship Online) | Connect | Details |
| Oxford University Studies in the Enlightenment | Connect | Details |
| O’Reilly Learning (formerly Safari eBooks) | Connect | Details |