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Contests for Adults For Younger Readers

After Midnight Authors Contest
Win a choice of romances (monthly).
An Apprentice to Elves Contest New contest
Win the fantasy by Elizabeth Bear & Sarah Monette (ends Oct 31, US, 18+).
Berkley Jove Contests
Fill in the form to win from a selection of books (monthly).
Bookbitch Contests New contest
Chances to win 5 autographed thrillers (ends Oct 31, 18+).
BookReporter Contests
Win a variety of books each month.
BookReporter Word of Mouth Contests New contest
Heart Goes Last, Last Midwife, Secret Chord (ends Oct 9).
Carla Neggers Contests New contest
Win 2 Swift River Valley books (ends Oct 31).
Criminal Element Sweepstakes
Win crime fiction (ongoing).
Crown Publishing Read It Forward
Chance to win books (ongoing, US, 18+).
Daughter of No Nation Contest New contest
Win A.M. Dellamonica's new fantasy (ends Nov 3, US & Can).
Elizabeth Lowell Contests New contest
Win Innocent as Sin (ends Oct 31).
Free Book Friday
Chance to win every Friday (weekly, US & Can).
Fresh Fiction Contests
Win a variety of books (ongoing).
Golden Lion Contest New contest
WinWilbur Smith's novel (ends Oct 22, US, 16+).
Goodreads Giveaways
Win a variety of prerelease books.
The Guilty Contest New contest
Win David Baldacci's latest (ends Oct 22, US, 16+).
Hachette Book Group USA Contests
Win a variety of books (ongoing).
James Patterson Contests New contest
Win Confessions bundle (ends Oct 7, US & Can, not Quebec, 13+).
Jayne Ann Krentz Contests
Win River Road signed copy (ends Oct 31, US, 18+). Contest
Win books and audiobooks (ongoing).
NAL Authors Contests
Win from a selection of books (ongoing).
Nicole Jordan Contests
Legendary Lovers novel (ends Oct 31).
OnceWritten Contests
Lots of books, various genres (ongoing).
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+).
The Right Wrong Thing Contest New contest
Win Ellen Kirschman's gripping mystery (ends Oct 31, US, 18+).
The Shards of Heaven Contest New contest
Win Michael Livingston's epic historical fantasy (ends Oct 19, US & Can).
Solar Express Contest New contest
Win L.E. Modesitt Jr.'s new SF novel (ends Oct 7, US & Can).
St. Martin's Read It First
Sign up, chance to win books (ongoing).
Strong Light of Day Contest New contest
Win Jon Land's latest (ends Nov 9, US, 16+).
Susan Elizabeth Phillips Contests
Win Heroes are My Weakness (ends Oct 31).
Writerspace Contests
Win ebook readers, books, gift certificates, much more (ongoing).

For Younger Readers Contests for Adults
Blue Voyage Contest New contest
Win Diana Renn's YA mystery (ends Oct 31, US, 18+).
TeenReads Thrills and Chills 2015 New contest
Chance to win 9 spooky YA novels (ends Nov 2, US, 18+).