Henri-Alban Fournier (French pronunciation: [alɛ̃ fuʁnje]; 3 October 1886 – 22 September 1914), known by the pseudonym Alain-Fournier, was a French author and soldier. He was the author of a single novel, Le Grand Meaulnes (1913), which has been filmed twice and is considered a classic of French literature. The book is based partly on his childhood.

Alain-Fournier was born in La Chapelle-d'Angillon, in the Cher département, in central France, the son of a school teacher. He studied at the Lycée Lakanal in Sceaux, Hauts-de-Seine, near Paris, where he prepared for the entrance examination to the École Normale Supérieure, but without success. He then studied at the merchant marine school in Brest. At the Lycée Lakanal he met Jacques Rivière, and the two became close friends. In 1909, Rivière married Alain-Fournier's younger sister Isabelle.