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Contests for Adults For Younger Readers

After Midnight Authors Contest
Win a choice of romances (monthly).
America - Farm to Table Contest New contest
Win Mario Batali's cookbook (ends Dec 28, US, 18+).
Berkley Jove Contests
Fill in the form to win from a selection of books (monthly).
Bookbitch Contests New contest
Chances to win 11 autographed thrillers (ends Dec 31, 18+).
BookReporter Contests
Win a variety of books each month.
BookReporter Word of Mouth Contests
Betrayed, Cinderella Murder, Don't Give Up, Don't Give In (ends Dec 5).
Bryant & May and the Bleeding Heart Contest New contest
Win the latest 'Peculiar Crimes Unit' mystery (ends Dec 31, US, 18+).
Carla Neggers Contests New contest
12 days of Christmas - 12 winners (ends Dec 21).
Criminal Element Sweepstakes
Win crime fiction (ongoing).
Crown Publishing Read It Forward
Chance to win books (ongoing, US, 18+).
The David Foster Wallace Reader Contest New contest
Win The David Foster Wallace Reader (ends Dec 29, US).
Deep Secret Giveaway New contest
Win Diana Wynne Jones' multiverse fantasy (ends Dec 16, US & Can).
Deep Secret Contest New contest
Win Diana Wynne Jones' fantasy classic (ends Dec 31, US & Can, not Quebec, 18+).
Elizabeth Lowell Contests New contest
Win autographed Innocent as Sin (ends Dec 31).
Free Book Friday
Chance to win every Friday (weekly, US & Can).
Fresh Fiction Contests
Win a variety of books (ongoing).
Goodreads Giveaways
Win a variety of prerelease books.
Hachette Book Group USA Contests
Win a variety of books (ongoing).
Inside a Silver Box Giveaway New contest
Win Walter Mosley's latest (ends Dec 23, US & Can).
James Patterson Contests
Win a Hope to Die signed copy (ends Dec 3, US & Can, not Quebec, 13+).
Jane Green Duo Giveaway New contest
Win Saving Grace & Tempting Fate (ends Dec 31, US, 18+).
Jayne Ann Krentz Contests
Win signed The Mystery Woman (ends Dec 31, US, 18+).
Karen Memory Giveaway New contest
Win Elizabeth Bear's new novel (ends Jan 5, US & Can).
Mark of the Beast Giveaway New contest
Win Adolphus A. Anekwe's medical thriller (ends Dec 15, US & Can).
Myshelf.com Contest
Win books and audiobooks (ongoing).
NAL Authors Contests
Win from a selection of books (ongoing).
Nicole Jordan Contests
Lover Be Mine, earrings (ends Dec 31).
North of Boston Contest New contest
Chance to win Elisabeth Elo's debut thriller (ends Dec 31, US, 18+).
OnceWritten Contests
Lots of books, various genres (ongoing).
Pacific Fire Giveaway New contest
Win Greg Van Eekhout's fantasy novel (ends Dec 22, US & Can).
Prime Crime Contests
Win a selection of mysteries (ongoing, US, 18+).
Random House Competitions
Win books, trips, much more (ongoing, UK, 13+).
Reader Views Contests
Win a variety of books (ongoing, US & Can, 18+).
St. Martin's Read It First
Sign up, chance to win books (ongoing).
Susan Elizabeth Phillips Contests New contest
Win Heroes Are My Weakness unabridged audiobook (ends Dec 31).
The Whispering Swarm Giveaway New contest
Win Michael Moorcock's fantasy (ends Dec 17, US & Can).
Writerspace Contests
Win ebook readers, books, gift certificates, much more (ongoing).

For Younger Readers Contests for Adults
Delirium Giveaway New contest
Win Lauren Oliver's YA novel (ends Dec 14, US & Can, not Quebec, 13+).
Love & Other Theories Giveaway New contest
Win Alexis Bass's YA novel (ends Dec 7, US & Can, not Quebec, 13+).
TeenReads Holiday Bundle of Cheer 2014 New contest
Chance to win 8 featured titles (ends Dec 12, US, 12+).
Zest Juicy Reads of the Month Contest
Win Tomboy: A Graphic Memoir (ends Dec 31, US & Can).