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Contests for Adults For Younger Readers

After Midnight Authors Contest
Win a choice of romances (monthly).
Berkley Jove Contests
Fill in the form to win from a selection of books (monthly).
Blood Ties Contest New contest
Win Nicholas Guild's thriller (ends May 31, US & Can, not Quebec, 18+).
Bookbitch Contests New contest
Chances to win 9 autographed thrillers (ends May 31, 18+).
BookReporter Contests
Win a variety of books each month.
BookReporter Word of Mouth Contests New contest
A God in Ruins, The Last Bookaneer, The Wright Brothers (ends May 8).
Carla Neggers Contests New contest
Win a Declan's Cross CD (ends May 31).
Criminal Element Sweepstakes
Win crime fiction (ongoing).
Crown Publishing Read It Forward
Chance to win books (ongoing, US, 18+).
The Devil's Only Friend Giveaway New contest
Win Dan Wells' demon hunter fantasy (ends May 19, US & Can).
Elizabeth Lowell Contests New contest
Win Death Echo (ends May 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).
The Iron Assassin Giveaway New contest
Win Ed Greenwood's alternate history novel (ends May 14, US & Can).
James Patterson Contests New contest
Win Unlucky 13 (ends May 6, US & Can, not Quebec, 13+).
Jayne Ann Krentz Contests New contest
Win Otherwise Engaged (ends May 31, US, 18+).
Lord of Runes Giveaway New contest
Win Dave Gross's fantasy (ends May 20, US & Can).
Myshelf.com Contest
Win books and audiobooks (ongoing).
NAL Authors Contests
Win from a selection of books (ongoing).
Nicole Jordan Contests
Legendary Lovers novel, earrings (ends May 31).
Night Life Contest New contest
Win Win David Taylor's historical mystery (ends May 31, US & Can, not Quebec, 18+).
OnceWritten Contests
Lots of books, various genres (ongoing).
The Philosopher Kings Giveaway New contest
Win Jo Walton's Just City sequel (ends Jun 1, 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+).
Solitude Creek Contest New contest
Win Jeffery Deaver's latest (ends May 21, US, 16+).
St. Martin's Read It First
Sign up, chance to win books (ongoing).
Susan Elizabeth Phillips Contests New contest
Win a signed book (ends May 31).
The Sweetheart Deal Contest New contest
Win Polly Dugan's novel (ends May 22, US, 16+).
Writerspace Contests
Win ebook readers, books, gift certificates, much more (ongoing).

For Younger Readers Contests for Adults
Seriously Wicked Contest New contest
Win Tina Connolly's hilarious new YA novel (ends May 31, US & Can, not Quebec, 18+).
TeenReads Spring Fling
Win 9 YA novels & tote bag (ends May 4, US, 18+).
TeenReads Weigh in and Win New contest
Take the survey, chance to win books (US, 18+).