Joseph Willibrord Mähler (10 June 1778 – 20 June 1860) was a German painter. He was born in Koblenz-Ehrenbreitstein, the son of Franz Josef Mähler and Anna Johanna, née Vacano. He first served an apprenticeship in Dresden with Anton Graff to become a painter and later on, he continued with his studies at the Academy of Fine Arts Vienna. Mähler then decided to start a civil career, and he became an officer of the Secret Service Geheime Kabinettskanzlei (secret chancellery) in Vienna, while painting in his spare time.