Johan Claesz Loo

Portrait of Johan Claesz Loo, detail of Frans Hals' schutterstuk The Officers of the St Adrian Militia Company in 1633

Johan Claesz van Loo (c.1585 – 1660), was a Dutch brewer, owning De Drie Leliën (The Three Lilies) in Haarlem, best known today for his portrait painted by Frans Hals.