Rey was born in Pont-du-Château on August 30, 1928. After studying political science, humanities and art history at the Sorbonne, Rey served in the 4th Regiment of the Tunisian Troops. While stationed in Algeria in 1952, he replied to an advertisement placed by Paul Robert, who was compiling a new French dictionary and looking for linguists. Rey become Robert's first collaborator, on Dictionnaire alphabétique et analogique. Robert's network of lexicographers grew and Rey married his colleague Josette Debove in 1954. In 1964 the very first Le Robert dictionary was published, followed by an abridged Le Petit Robert in 1967. Rey went on to supervise the publication of many more dictionaries under the Le Robert trademark: the Petit Robert ; the Micro Robert, a pocket dictionary; the Petit Robert des noms propres, a guide to proper names; the Dictionnaire des expressions et locutions, a dictionary of phrases and expressions; the Grand Robert de la langue française, a nine-volume work ; an updated version, the Nouveau Petit Robert de la langue française, and the Dictionnaire historique de la langue française. On 20th October 2016 a new and expanded edition of the Dictionnaire historique was to be published in two volumes. In 2005, he published the Dictionnaire culturel en langue française. Beyond the printed page, Rey enjoys the status of a French media personality. Between 1993 and 2006, he appeared daily on France Inter's morning radio show, Sept neuf trente, in a three-minute closing segment called Le mot de la fin, in which he presented an entertaining analysis of French vocabulary. Rey often garnished these segments with political commentary of a libertarian stripe. Rey's segment was retired in 2006 — a move that for some signalled France Inter's desire for new blood to capture a younger demographic. His last segment with France Inter, which aired June 29, 2006, examined the word . Between 2004 and 2005, Rey also appeared after the 8 o'clock evening news on the channelFrance 2, in a segment entitled Démo des Mots, in which he explained the history of French financial jargon. In 2005, the French Minister of Culture and Communication awarded him the title of Commander in the French Ordre des Arts et des Lettres. Rey is also a signatory of the Appel à la vigilance contre le néocréationnisme et les intrusions spiritualistes en science, published in France in December 2005. Since September 2007, Rey has appeared on Laurent Baffie's Sunday morning radio show on Europe 1.
Internet celebrity
On July 14th 2017, French YouTuber Squeezie made a song with two popular rappers called Bigflo & Oli. To get the words for the song they randomly selected words from a dictionary that was directed by Rey. They made a joke about how people direct dictionaries and Rey became a running joke. On September 29 2017, Squeezie made another song with Bigflo & Oli, this time they invited Alain himself to choose their words, and they chose words for him to rap.