Albertus Gerardus "Gerard" Bilders was a Dutch landscape-painter, associated with some members of the Hague School, as Anton Mauve and Willem Maris.

The Hague School is a group of artists who lived and worked in The Hague between 1860 and 1890. Their work was heavily influenced by the realist painters of the French Barbizon school. The painters of the Hague school generally made use of relatively somber colors, which is why the Hague School is sometimes called the Gray School.