Buffett has written three No. 1 best sellers. Tales from Margaritaville and Where Is Joe Merchant? both spent over seven months on the New York Times Best Seller fiction list. His book A Pirate Looks At Fifty went straight to No. 1 on the New York Times Bestseller non-fiction list, making him one of seven authors in that list's history to have reached No. 1 on both the fiction and non-fiction lists. The other six authors who have accomplished this are Ernest Hemingway, John Steinbeck, William Styron, Irving Wallace, Dr. Seuss and Mitch Albom.

Buffett also co-wrote two children's books, The Jolly Mon and Trouble Dolls, with his eldest daughter, Savannah Jane Buffett. The original hard cover release of the The Jolly Mon included a cassette tape recording of him and Savannah Jane reading the story accompanied by an original score written by Michael Utley.

Buffett's novel A Salty Piece of Land, was released on November 30, 2004, and the first edition of the book included a CD single of the song "A Salty Piece Of Land", which was recorded for License to Chill. The book was a New York Times best seller soon after its release.

Buffett's latest title, Swine Not?, was released May 13, 2008.

Buffett is currently writing a follow-up to his autobiography A Pirate Looks At Fifty, which he says may take up to ten years to write and complete.