Jan Dirksz Both (between 1610 and 1618, Utrecht - Aug 9 1652, Utrecht), brother of Andries Both, was a Dutch painter.
From 1634 to 1637 he was taught by Bloemaert and the painter Gerard van Honthorst before travelling to Rome ca. 1637. There he met the French painter Claude Lorrain, with whom he collaborated on a series of landscape paintings. His landscapes are typically peopled by peasants driving cattle or travellers gazing on Roman ruins in the light of the evening sun The everyday life of the streets of Rome became a favourite theme in his works. On his return to Utrecht after the death of his brother in 1642, he stopped producing genre pieces and focused instead on pictures of Italian landscapes bathed in a warm, golden light. This theme was adopted by several other Dutch painters, the Italianites.