274 "o" books to be listed.
| Books with Titles Starting with O | Title | Author (Surname,Forename) | Rating | Votes |
|---|---|---|---|---|
| O Caçador de Brinquedos e Outras Histórias | Barreiros, João | 9 | 13 | |
| O Cipreste Apaixonado | Macedo, António de | 6 | 3 |
| O Futuro à Janela | Silva, Luís Filipe | 7 | 1 |
| O Greenest Branch! | Baudino, Gael |
| O Limite de Rudzky | Macedo, António de | 3 | 1 |
| O.T. 1 The Original Transformer | Azzan, Louvenia | 10 | 1 |
| Oakleaf Bearers | Flanagan, John | 9 | 24 |
| Oath Breaker | Paver, Michelle |
| Oath of Fealty | Moon, Elizabeth |
| Oath of Fealty | Niven, Larry & Pournelle, Jerry |
| Oath of Gold | Moon, Elizabeth | 9 | 11 |
| Oath of Nurell | Cordell, Bruce R. & Lain, T. H. |
| Oath of Swords | Weber, David | 8 | 16 |
| Oathblood | Lackey, Mercedes | 7 | 4 |
| Oathbreaker | Kyme, Nick |
| Oathbreakers | Lackey, Mercedes | 7 | 8 |
| Oaths | Hauman, Glenn |
| Oaths and Miracles | Kress, Nancy |
| Obernewtyn | Carmody, Isobelle | 9 | 29 |
| Oberon''s Meaty Mysteries: The Squirrel on the Train | Hearne, Kevin |
| Objective: Bajor | Peel, John |
| Oblivion | Friedman, Michael Jan |
| Obsessed | Dekker, Ted |
| Obsession Everlasting | Phillips, Lisa |
| Obsidian Butterfly | Hamilton, Laurell K. | 9 | 23 |
| Obsidian Ridge | Lebow, Jess |
| Ocean of Years | Allen, Roger MacBride | 9 | 1 |
| Ocean Under the Ice | Forward, Robert L. & Dodson Forward, Martha |
| Oceans of Magic | Greenberg, Martin H. & Thomsen, Brian A. |
| Oceanspace | Steele, Allen M. |
| October 1st Is Too Late | Fred, Hoyle |
| Octoberland | Attanasio, A. A. |
| October's Baby | Cook, Glen | 8 | 4 |
| Odalisque | McIntosh, Fiona |
| Odd Hours | Koontz, Dean |
| Odd Is on Our Side | Koontz, Dean |
| Odd John | Stapledon, Olaf |
| Odd Thomas | Koontz, Dean | 8 | 2 |
| Oddkins | Koontz, Dean | 8 | 6 |
| Odds and Gods | Holt, Tom |
| Ode To Minoa | Dintino, Theresa |
| Odyssey | Moore, Vance | 9 | 3 |
| Odyssey | McDevitt, Jack |
| Odyssey | Laumer, Keith | 10 | 1 |
| Odyssey Bourne Force | Renner, Debbie |
| Of Aged Angels | Cook, Monte | 8 | 1 |
| Of Berserkers, Swords and Vampires | Saberhagen, Fred |
| Of Fire and Night | Anderson, Kevin J. |
| of flowers and shadows | kirwan, anna & lasky, kathrin | 1 | 1 |
| Of Limited Loyalty | Stackpole, Michael A. |
| Of Masques and Martyrs | Golden, Christopher | 9 | 1 |
| Of Men and Monsters | Tenn, William | 9 | 3 |
| Of Saints and Shadows | Golden, Christopher | 9 | 1 |
| Of Swords and Spells | Turner, Delia Marshall | 8 | 1 |
| Of Tangible Ghosts | Modesitt Jnr., L.E. |
| Of This and Other Worlds | Lewis, C.S. | 9 | 2 |
| Off Armageddon Reef | Weber, David | 9 | 7 |
| Off the Screen | Clough, Brenda |
| Off the Wall at Callahan's | Robinson, Spider | 7 | 3 |
| Officer-Cadet | Shelley, Rick | 7 | 3 |
| Offspring | Harper, Steven |
| Ogre, Ogre | Anthony, Piers | 9 | 11 |
| Oh Baby! | Reisfeld, Randi |
| Old Ahab's Friend, and Friend to Noah, Speaks His Piece | Bradbury, Ray |
| Old Guard | Laumer, Keith |
| Old Magic | Curley, Marianne | 9 | 9 |
| Old Man's War | Scalzi, John | 8 | 8 |
| Old Nathan | Drake, David |
| Old Soldiers | Weber, David |
| Old Tin Sorrows | Cook, Glen | 9 | 10 |
| Old Twentieth | Haldeman, Joe |
| Old Wounds | Golden, Christie |
| Olympiad | Holt, Tom |
| Olympos | Simmons, Dan | 9 | 3 |
| Ombria in Shadow | McKillip, Patricia A. | 8 | 2 |
| Omega | McDevitt, Jack | 7 | 1 |
| Omen | Golden, Christie |
| Omnibus 1: At the Mountains of Madness | Lovecraft, Howard Phillips | 9 | 5 |
| Omnibus 2: Dagon and Other Macabre Tales | Lovecraft, Howard Phillips | 8 | 2 |
| Omnibus 3: The Haunter of the Dark | Lovecraft, Howard Phillips | 9 | 2 |
| Omnitopia Dawn | Duane, Diane |
| On | Roberts, Adam | 8 | 6 |
| On A Darkling Plain | Byers, Richard Lee | 9 | 2 |
| On a Move : The Story of Mumia Abu Jamal | Bisson, Terry |
| On a Pale Horse | Anthony, Piers | 8 | 16 |
| On Basilisk Station | Weber, David | 9 | 19 |
| On Blue's Waters | Wolfe, Gene | 9 | 7 |
| On Crusade: More Tales of the Knights Templar | Kurtz, Katherine |
| On Dragonwings | McCaffrey, Anne |
| On Earth As It Is In Hell | Hodge, Brian |
| On Fires Wings | Golden, Christie | 8 | 2 |
| On Fortune's Wheel | Voigt, Cynthia |
| On Her Majesty's Wizardly Service | Duane, Diane | 4 | 1 |
| On My Way to Paradise | Wolverton, Dave | 7 | 3 |
| On Pirates | Powers, Tim & Blaylock, James P. |
| On Stranger Tides | Powers, Tim | 9 | 9 |
| on the edge | Duncan, Lois & , duncan |
| On the Edge | Andrews, Ilona |
| On the Far Side of the Mountain | George, Jean Craighead | 7 | 3 |
| On the Oceans of Eternity | Stirling, S. M. | 9 | 2 |
| On the Run | Golden, Christie |
| On the Seas of Destiny | Emerson, Ru |
| On the Steel Breeze | Reynolds, Alastair |
| On the Verge | Green, Roland |
| On Writing | King, Stephen |
| Onaj's Horn | Whittemore, Jo |
| Once a Hero | Moon, Elizabeth | 7 | 3 |
| Once a Hero | Stackpole, Michael A. | 9 | 6 |
| Once A Thief | Hauf, Michele | 9 | 1 |
| Once Bitten | Price, Kalayna |
| Once Bitten, Twice Shy | Rardin, Jennifer | 10 | 1 |
| Once Burned | David, Peter |
| Once Dead, Twice Shy | Harrison, Kim |
| Once Lost | Beyer, Kirsten |
| Once there was a Giant | Laumer, Keith |
| Once Upon a Crime | Buckley, Michael | 7 | 2 |
| Once Upon A Curse | Baker, E.D. | 9 | 21 |
| Once Upon a Galaxy with Martin Greenberg | Helfers, John & McCarthy, Wil |
| Once Upon a Rhyme | Heckel, Jack |
| Once Upon a Time in the East | Fenn, Lionel |
| Once Upon a Time in the North | Pullman, Philip |
| Once Upon a Winter's Night | McKiernan, Dennis L. | 7 | 9 |
| Once Upon Stilettos | Swendson, Shanna |
| Once Upona Galaxy | Sherman, Josepha |
| Once Walked with Gods | Barclay, James |
| One | Williams, Conrad |
| One Day at Horrorland | Stine, R. L. | 9 | 5 |
| One day on Mars | Taylor, Travis S. |
| One Door Away from Heaven | Koontz, Dean | 8 | 5 |
| One Foot in the Grave | Simmons, William Mark & Simmons, Wm Mark | 8 | 1 |
| One Foot in the Grave | Frost, Jeaniene | 8 | 1 |
| One For Sorrow | Barzak, Christopher |
| One For Sorrow, Two For Joy | Woodall, Clive | 7 | 4 |
| One For The Money | Evanovich, Janet |
| One Good Knight | Lackey, Mercedes | 8 | 2 |
| One In the Night | Mitchell, J.R. |
| One Jump Ahead | Van Name, Mark L. |
| One King, One Soldier | Irvine, Alexander C. |
| One King's Way | Harrison, Harry | 10 | 1 |
| One Knight Only | David, Peter |
| One Million Tomorrows | Shaw, Bob |
| One Mind's Eye | Tyers, Kathy |
| One More Bite | Rardin, Jennifer |
| One More for the Road | Bradbury, Ray | 8 | 1 |
| One Never Knows . . . With a Banshee | Bartlett, Denise |
| One never knows...with Dragons | Bartlett, Denise |
| One of Our Thursdays Is Missing | Fforde, Jasper |
| One of Us | Smith, Michael Marshall | 9 | 6 |
| One Salt Sea | McGuire, Seanan |
| One Second After | Forstchen, William R. |
| One Shot | Child, Lee |
| One Silent Night | Kenyon, Sherrilyn |
| One Small Step | Wright, Susan |
| One step from earth | HARRISON, HARRY | 5 | 2 |
| One Thing or Your Mother | Beyer, Kirsten |
| One Winter in Eden | Bishop, Michael |
| One Wizard Place | Paul, D. M. |
| One-Armed Queen | Yolen, Jane |
| One-Eye | Gordon, Stuart |
| One-Eyed Jacks | Martin, George R.R. | 5 | 1 |
| Only an Alligator | Aylett, Steve |
| Only Forward | Smith, Michael Marshall | 9 | 10 |
| Only Human | Holt, Tom |
| Only You Can Save Mankind | Pratchett, Terry | 9 | 5 |
| Onslaught | Sherman, David |
| Onslaught | King, J. Robert | 10 | 1 |
| Onslaught | Stackpole, Michael A. | 9 | 3 |
| ONYALUM RETRIBUTION | VanYoos, NB | 9 | 3 |
| Open Sesame | Holt, Tom |
| Open Space | Lalumiere, Claude | 7 | 3 |
| Opening Atlantis | Turtledove, Harry |
| Operation Audacity | Pardoe, Blaine Lee | 8 | 3 |
| Operation Chaos | Anderson, Poul | 7 | 1 |
| Operation Excalibur | Keith, Jr., William H. |
| Operation Luna | Anderson, Poul |
| Operation Sierra-75 | Gressman, Thomas S. |
| Operation: Eyewitness | Wise, Rudd | 8 | 1 |
| Operation: Save the Innocent | Ruggiero, Tony |
| Options | Sheckley, Robert | 8 | 3 |
| Or Give Me Death: A Novel of Patrick Henry's Family | Rinaldi, Ann |
| Oracle | Resnick, Mike |
| Orb Sceptre Throne | Esslemont, Ian Cameron |
| Orbital Burn | Bedford, K. A. |
| Orbital Decay | Steele, Allen M. | 8 | 2 |
| Orbitsville | Shaw, Bob | 8 | 4 |
| Orbus | Asher, Neal L. |
| Orca | Brust, Steven | 7 | 8 |
| Orc's Opal | Anthony, Piers | 8 | 3 |
| Order 66 | Traviss, Karen |
| Ordermaster | Modesitt Jnr., L.E. | 9 | 1 |
| Orfe | Voigt, Cynthia |
| Origin | Baxter, Stephen | 6 | 3 |
| Origin | Brown, Dan |
| Origin Scroll | Tuttle, Richard S. | 8 | 6 |
| Orion | Bova, Ben | 9 | 3 |
| Orion among the Stars | Bova, Ben | 6 | 5 |
| Orion and the Conqueror | Bova, Ben | 1 | 1 |
| Orion Arm | May, Julian | 7 | 2 |
| Orion in the Dying Time | Bova, Ben |
| Orion's Hounds | Bennett, Christopher L. |
| Orphan of Creation | Allen, Roger MacBride |
| orphan puppy | dale, jenny | 10 | 1 |
| Orphan Star | Foster, Alan Dean | 9 | 3 |
| Orphanage | Buettner, Robert | 7 | 3 |
| Orphans | Boyett, Steven R. |
| Orphan's Alliance | Buettner, Robert | 10 | 1 |
| Orphan's Destiny | Buettner, Robert | 10 | 1 |
| Orphan's Journey | Buettner, Robert | 10 | 1 |
| Orphans of Chaos | Wright, John C. | 9 | 1 |
| Orphans of Earth | Williams, Sean & Dix, Shane |
| Orphans of the Sky | Heinlein, Robert A. | 7 | 1 |
| Orphan's Triumph | Buettner, Robert | 10 | 1 |
| Oryx and Crake | Atwood, Margaret | 9 | 4 |
| Other | Dickson, Gordon R. |
| Other Days, Other Eyes | Shaw, Bob |
| Other Lands | WYLIE, JONATHAN |
| Otherness | Brin, David | 8 | 1 |
| Others | Herbert, James | 7 | 1 |
| Othersyde | Straczynski, J. Michael |
| Otherwheres,Otherwhens: Favorite Stories of John D | Dalmas, John |
| Otherworld | Harbinson, W. A. | 10 | 1 |
| Our Children's Children | Simak, Clifford D. | 6 | 1 |
| Our Friends from Frolix 8 | Dick, Philip K. | 8 | 5 |
| Our Lady of the Harbor | de Lint, Charles | 6 | 10 |
| Our World Is Earth | Engdahl, Sylvia |
| Out of all them bright stars | Kress, Nancy | 1 | 1 |
| Out of Phaze | Anthony, Piers | 8 | 5 |
| Out of Sight, Out of Mind | Aaron, Chester |
| Out of the Abyss | Clough, Brenda |
| Out of the Ashes | Morphurgo, Micheal | 9 | 1 |
| Out of the Cocoon | Leisner, William |
| Out of the Dark | Weber, David |
| Out of the Darkness | Turtledove, Harry | 5 | 2 |
| Out of the Darkness | David, Peter |
| Out of the House of Life | Yarbro, Chelsea Quinn | 9 | 2 |
| Out Of The Madhouse | Golden, Christopher & Holder, Nancy | 10 | 1 |
| Out Of The Silence | Cox, Erle | 6 | 1 |
| Out of the Silent Planet | Lewis, C.S. | 8 | 24 |
| Out of Their Minds | Simak, Clifford D. |
| Out of This World | Watt-Evans, Lawrence | 9 | 2 |
| Out of Time | Cooney, Caroline B. | 10 | 1 |
| Out of Time | Abbey, Lynn | 10 | 2 |
| Out of Time | Ball, Cliff | 6 | 1 |
| Outbound | McDevitt, Jack |
| Outbound Flight | Zahn, Timothy | 8 | 6 |
| Outbreak | Tine, Robert |
| Outcast | Paver, Michelle | 8 | 3 |
| Outcast | Ewing, Lynne | 10 | 2 |
| Outcast | Allston, Aaron |
| Outcast | Hunter, Erin | 10 | 182 |
| Outcast of Redwall | Jacques, Brian | 9 | 19 |
| Outcasts | Emery, Clayton | 8 | 2 |
| Outland | Foster, Alan Dean |
| Outlaw School | Ore, Rebecca | 6 | 1 |
| Outlaw: Champions of Kamigawa | McGough, Scott | 8 | 3 |
| Outrageous Fortune | Scott, Tim |
| Outreach | Lichtenberg, Jacqueline |
| Outside In | Snyder, Maria V. |
| Outside of Space | Burns, Timothy |
| Outside the Dog Museum | Carroll, Jonathan | 10 | 1 |
| Outsiders | Holder, Nancy & Kilpatrick, Nancy |
| Outworlder | Carter, Lin | 10 | 1 |
| Over a Torrent Sea | Bennett, Christopher L. |
| Over Sea, Under Stone | Cooper, Susan | 7 | 7 |
| Over the Hedge | Gikow, Louise | 6 | 2 |
| Overtime | Holt, Tom |
| Overwinter: A Werewolf Tale | Wellington, David |
| owl in the office | baglio, ben |
| Owlflight | Lackey, Mercedes & Dixon, Larry | 7 | 7 |
| Owlknight | Lackey, Mercedes & Dixon, Larry | 8 | 8 |
| Owls in the Family | Mowat, Farley |
| Owlsight | Lackey, Mercedes & Dixon, Larry | 7 | 6 |
| Ozma of Oz | Baum, L. Frank | 7 | 1 |
| Ozoplaning with the Wizard of Oz | Thompson, Ruth Plumly |