Books about Cousins -- Juvenile fiction (sorted alphabetically)
- Tarzan twins Edgar Rice Burroughs
- Three Little Cousins Amy Ella Blanchard
- Three Margarets Laura Elizabeth Howe Richards
- Trading Susan Warner
- Twin Cousins Sophie May
- Two Ways of Becoming a Hunter Harry Castlemon
- Uncle Jo's Old Coat Eleanora H. Stooke
- Very Naughty Girl L. T. Meade
- What Katy Did Susan Coolidge
- When Grandmamma Was New: The Story of a Virginia Childhood Marion Harland
- Whistler; or, The Manly Boy Walter Aimwell
- White Crystals: Being an Account of the Adventures of Two Boys Howard Roger Garis
- White Lilac; or the Queen of the May Amy Walton
- With the Allies to Pekin: A Tale of the Relief of the Legations G. A. Henty
- Won at last : or, Mrs. Briscoe's nephews Agnes Giberne
- Woodside Caroline Hadley
- Young Berringtons: The Boy Explorers William Henry Giles Kingston