all  science fiction  fantasy  horror  mystery  thriller  romance    

 All authors, surname starts with O BooksGenres
Tim O'RourkeNew Books108f
Dani Oakley3m
Joyce Carol OatesNew Books190m,s
Patrick O'BrianNew Books43t
Anne O'BrienNew Books31r
Edna O'BrienNew Books50
Kevin O'BrienNew Books21m,t
Martin O'Brien11m
Carol O'Connell14m
Carlene O'ConnorNew Books5m
Karen OddenNew Books2m
Mel OdomNew Books150h,m,s,t
Maggie O'FarrellNew Books12
Sheila O'FlanaganNew Books37f,r
Kate O'HearnNew Books17f
Kristina OhlssonNew Books10m
Janette Oke104r
Molly O'Keefe44r
Nnedi OkoraforNew Books18f,s
Nick Oldham30m,t
Caitlyn O'LearyNew Books25m,r
Jenny OliverNew Books14r
Lauren OliverNew Books25f,m,r,s
Gregg OlsenNew Books53m
Melissa F OlsonNew Books18f
Tricia O'MalleyNew Books22f,m,r
Mike OmerNew Books6m
Michael Ondaatje30
Barbara O'NealNew Books11m,r
Geraldine O'NeillNew Books15r
Tochi OnyebuchiNew Books2f
Kenneth Oppel35h,t
Baroness Orczy50
Bill O'ReillyNew Books31m
Diana Orgain17m
Emily OrganNew Books13m
George OrwellNew Books67s
Sara OrwigNew Books207m,r
Maggie Osborne47
Mary Pope OsborneNew Books104
Kirsten OsbourneNew Books161r
Perri O'Shaughnessy15m
Ronnie O'SullivanNew Books3m
James OswaldNew Books13m
Chris Ould6m
Gail OustNew Books12m
Hollie OvertonNew Books3m
C M OwensNew Books58f,r
Delia Owens1m
Robin D OwensNew Books35f,h,r
Helen OyeyemiNew Books9
Amos Oz34

an indication of the popularity of an author on our website,
based on the number of people visiting the author's page.

Please note: This list only shows the most popular authors on our site.