Georges Antoine Rochegrosse was a French historical and decorative painter.

He was born in Versailles and studied in Paris with Jules Joseph Lefebvre and Gustave Clarence Rodolphe Boulanger. His themes are generally historical, and he treated them on a colossal scale and in an emotional naturalistic style, with a distinct revelling in horrible subjects and details.

He made his Paris Salon début in 1882 with Vitellis traîné dans les rues de Rome par la populace (Vitellius dragged through the streets of Rome by the people) (1882; Sens). He followed this the year afterwards with Andromaque (1882–83; Musée des Beaux-Arts de Rouen), which won that year's prestigious Prix du Salon. There followed La Jacquerie (1885; Untraced), Le mort de Babylone (The fall of Babylon) (1891; Untraced), The death of the Emperor Geta (1899; Musée de Picardie, Amiens), and Barbarian ambassadors at the Court of Justinian (1907; Untraced), all of which exemplify his strong and spirited but sensational and often brutal painting. In quite another style and beautiful in colour is his Le Chevalier aux Fleurs (The Knight of Flowers) (1894; Musée d’Orsay, Paris; RF 898).

He was elected an Officer of the Legion of Honour in 1892 and received the Medal of Honour in 1906 for The Red Delight. Rochegrosse also illustrated several books. Some of the drawings for these illustrations are in the Department of Prints and Drawings at the British Museum, London. He lived his final years in Algeria, but returned to Paris where he died and is buried in Montparnasse Cemetery. His wife, Marie Rochegrosse (née Leblond), had died in 1920.