Jacques Réattu (French pronunciation: [ʒak ʁeaty]; 3 August 1760, Arles – 7 April 1833, Arles) was a French painter and winner of the grand prix de Rome.
He was an illegitimate son of the painter Guillaume de Barrême de Châteaufort and Catherine Raspal, sister of the Arles-born painter Antoine Raspal – Antoine gave him his first lessons in painting.
In 1790 he won the Prix de Rome, thanks to a work, currently exhibited at the École nationale supérieure des beaux-arts in Paris, Daniel faisant arrêter les vieillards accusateurs de la chaste Suzanne.
Following anti-French riots of the Roman population, he fled to Naples, from where he could return to France.
The town of Arles named the Musée Réattu established at the site of his residence in his honour.