Jean-Baptiste van Loo (14 January 1684 – 19 December 1745) was a French subject and portrait painter.

Having at an early age executed several pictures for the decoration of the church and public buildings at Aix, he was employed on similar work at Toulon, which he was obliged to leave during the siege of 1707.

[1] He also painted portraits of aristocrats living in or visiting Paris, including a young William Murray who later went on to be a friend and regular client as the 1st Lord Mansfield.

In 1737 he went to England, where he attracted attention by his portrait of Colley Cibber and of Owen McSwiny, the theatrical manager; the latter, like many other of van Loo's works, was engraved in mezzotint by John Faber the Younger.

He did not, however, practise long in England, because of his failing health; he retired to Paris in 1742, and afterwards to Aix-en-Provence, where he died on 19 December 1745.