Fiction:
* The Hairy Ape by Eugene O'Neill (play)
* The Hair-Shirt by D. H. Lawrence (short story)
* Hair Raising by John Saul (horror novel)
* The Girl with the Dragon Tattoo by Stieg Larsson (crime novel)
* A Hair's Breadth by Agatha Christie (mystery novel)
* The Hairy Man by Stephen King (short story)
Non-fiction:
* Hair: A Cultural History by Valerie Steele (fashion history)
* The Hair Book: Everything You Need to Know About Hair by Philip Kingsley (hair care guide)
* Hair Loss: A Guide for Men and Women by Alan Bauman (medical guide)
* Hair Today, Gone Tomorrow: The Science of Hair Loss by Joseph A. Greco (medical guide)
Children's Literature:
* The Very Hairy Caterpillar by Eric Carle (children's book)
* Hair Love by Matthew Cherry (picture book)
* Where the Wild Things Are by Maurice Sendak (children's book, features a character with wild hair)
Other:
* Hairspray (musical)
This is just a small sampling, and many other books with "hair" in the title exist. It would be helpful to know what genre, time period, or specific theme you are interested in to give you a more accurate and relevant list.