Young Man with a Horn is a 1938 novel by Dorothy Baker that is loosely based on the real life of jazz cornet player Bix Beiderbecke.

The novel was adapted for the movie Young Man with a Horn (1950) with Kirk Douglas, Doris Day, Lauren Bacall, Juano Hernández, and real-life Bix Beiderbecke friend and collaborator Hoagy Carmichael Dorothy Baker explained that the inspiration for the book was jazz cornetist, pianist, and composer Bix Beiderbecke.

In the Preface, she wrote: "The inspiration for the writing of this book has been the music, but not the life, of a great musician, Leon (Bix) Beiderbecke, who died in the year 1931.

The characters and events of the story are entirely fictitious and do not refer to real musicians, living or dead, or to actual happenings."

The novel has been reprinted many times in hardcover and paperback editions and has been published in German, Italian, French, and Spanish translations.