What was Ernest Hemingway's middle name?

Ernest Hemingway's middle name was Miller. His full name was Ernest Miller Hemingway, a name he carried from birth in Oak Park, Illinois, where he was born on July 21, 1899.

The name Miller came from his mother's family. Hemingway was named after his maternal grandfather, Ernest Hall, while Miller was also a family name connected to his maternal ancestry. Although he became internationally famous simply as Ernest Hemingway, biographical references and archival records consistently identify Miller as his middle name.

Miller is sometimes confused with the names of Hemingway's children or relatives. His son Patrick, for example, was Patrick Miller Hemingway, and the shared family name can create confusion when readers encounter genealogical references. Hemingway's own name should not be expanded to include a second middle name: the canonical form is Ernest Miller Hemingway.

Hemingway later became associated with the nickname Papa, but Papa was an informal nickname rather than part of his legal name. His best-known works include The Sun Also Rises, A Farewell to Arms, For Whom the Bell Tolls, and The Old Man and the Sea.