List of Famous people born in Wallonia, Belgium

Jean-Charles Houzeau de Lehaie was a Belgian astronomer and journalist. He moved to New Orleans after getting in trouble for his politics in Belgium. In the U.S. he continued his journalistic, astronomical, and political pursuits. He was an abolitionist and joined with unionists before the war in Texas. He worked with Louis Charles Roudanez at a newspaper in New Orleans, before living in Jamaica for a while, receiving reinstatement from an observatory in Brussels and returning to Europe. He came back to Texas for an astronomical event. He published stirring accounts of his adventures and contacts during his travels as well as several works on astronomical subjects.

César Thomson was a Belgian violinist, teacher and composer.

Henri Hanlet was a Belgian racing cyclist. He won the Belgian national road race title in 1910. The previous year he finished in 8th place in 1909 Paris–Roubaix.

Paul Delvaux was a Belgian painter noted for his dream-like scenes of women, classical architecture, trains and train stations, and skeletons, often in combination. He is often considered a surrealist, although he only briefly identified with the Surrealist movement. He was influenced by the works of Giorgio de Chirico.

Jacques de Guyse (1334−1399) was a Franciscan historian of the County of Hainaut in the late 14th century.

Jean-Théodore Radoux was a Belgian composer and bassoonist. In 1859 he won the Belgian Prix de Rome for his cantata Le Juif errant which he had composed earlier that year. His other compositions include 2 operas, an oratorio, 2 symphonic poems, an overture, several choral works and vocal art songs, and music for the church.

Matheus de Layens was a Brabantine architect from the 15th century.

Henri Grégoire was an eminent scholar of the Byzantine Empire, virtually the founder of Byzantine studies in Belgium.