William von Moll Berczy (December 10, 1744 – February 5, 1813) was a German-born Upper Canada pioneer and painter.

Berczy was born in Wallerstein, Swabia, Electorate of Bavaria (part of the Holy Roman Empire and now in Germany) as a son of the Wirklicher Hofrat (Albrecht Theodor Moll) and Johanna Josepha Walpurga Moll (née Hefele).

[1] He studied at the Akademie der bildenden Künste in Vienna and at the University of Jena in Saxony.

[2] In 1792, Berczy sailed for the Americas, settling in Philadelphia, then setting up a business in York, Upper Canada (now Toronto).

[11] Although best known for his portraits, he also carried out religious paintings and architectural work, including plans for Christ Church Cathedral in Montreal in 1803,[12] and was a surveyor.

[6] His wife moved in with her son William and died on September 18, 1839, in Sainte-Mélanie, Lower Canada.

Also in honour of this founder, the then Town of Markham named one of its densely populated neighbourhoods after him, the Berczy Village.