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      Authors A–Z: O

      Browse FictionDB authors alphabetically by last name, with book counts, series information, and bibliography links for quick discovery.

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      Letter: O Showing: 151–200 Total authors: 916
      O'Donohue, Clare
      Mystery
      Books 11 books
      Series 3 series
      O'Donovan, Gerard
      Police Procedural
      Books 4 books
      Series 1 series
      O'Dowd, Chris; Murphy, Nick Vincent
      General Fiction
      Books 5 books
      Series 1 series
      O'Dwyer, Starbuck
      General Fiction
      Books 3 books
      O'Fallon, Tee
      Romantic Suspense
      Books 16 books
      Series 4 series
      O'Faolain, Julia
      General Fiction
      Books 9 books
      O'Faolain, Nuala
      General Fiction
      Books 4 books
      O'Faolain, Sean
      General Fiction
      Books 5 books
      O'Farrell, John
      General Fiction
      Books 9 books
      O'Farrell, Maggie
      Literary
      Books 13 books
      O'Flaherty, Liam
      General Fiction
      Books 15 books
      O'Flaherty, Louise
      Historical Romance
      Books 8 books
      Series 1 series
      O'Flaherty, Wendy Doniger
      Fantasy
      Books 3 books
      O'Flanagan, Sheila
      Women's Fiction
      Books 39 books
      O'Flynn, Catherine
      General Fiction
      Books 5 books
      O'Flynn, Mark
      General Fiction
      Books 6 books
      O'Flynn, Meghan
      General Fiction
      Books 41 books
      Series 1 series
      O'Grady, Kristina
      Romance
      Books 5 books
      Series 2 series
      O'Grady, Leslie
      Historical Romance
      Books 10 books
      Series 1 series
      O'Grady, Patricia
      Fantasy
      Books 7 books
      Series 1 series
      O'Grady, Rohan
      Gothic
      Books 5 books
      O'Grady, Timothy
      General Fiction
      Books 5 books
      O'Hagan, Andrew
      General Fiction
      Books 8 books
      O'Hagan, Joan
      Suspense
      Books 4 books
      O'Hair, Margaret
      General Fiction
      Books 8 books
      O'Hallion, Sheila
      Historical Romance
      Books 6 books
      O'Hanlon, Ardal
      Horror
      Books 3 books
      O'Hara, Gerry
      Contemporary Romance
      Books 4 books
      O'Hara, John
      General Fiction
      Books 26 books
      O'Hara, Kate
      Contemporary Romance
      Books 7 books
      O'Hara, Kenneth
      General Fiction
      Books 5 books
      O'Hara, Lauren; O'Hara, Natalia
      General Fiction
      Books 5 books
      O'Hara, Mary
      General Fiction
      Books 4 books
      Series 1 series
      O'Hara, Max
      Historical
      Books 5 books
      Series 1 series
      O'Hara, Mo
      General Fiction
      Books 19 books
      Series 3 series
      O'Hara, Nancy
      General Fiction
      Books 3 books
      O'Hara, Tracey
      Urban Fantasy
      Books 7 books
      Series 1 series
      O'Hart, Sinead
      General Fiction
      Books 11 books
      O'Hearn, Kate
      Fantasy
      Books 18 books
      Series 4 series
      O'Hearn, Michael
      General Fiction
      Books 10 books
      Series 1 series
      O'Hehir, Diana
      Mystery
      Books 7 books
      Series 1 series
      O'Hurley, John
      General Fiction
      Books 4 books
      O'Kane, Leslie
      Amateur Sleuth
      Books 28 books
      Series 5 series
      O'Keefe, Bobbie
      Romantic Suspense
      Books 7 books
      O'Keefe, Chap
      Historical
      Books 25 books
      Series 2 series
      O'Keefe, Charles
      Horror
      Books 5 books
      Series 1 series
      O'Keefe, Claudia
      Horror
      Books 6 books
      O'Keefe, M.
      Contemporary Romance
      Books 18 books
      Series 4 series
      O'Keefe, Megan E.
      Science Fiction
      Books 12 books
      Series 4 series
      O'Keefe, Molly
      Contemporary Romance
      Books 45 books
      Series 10 series