August Hartel (26 February 1844 – 18 February 1890) was a German architect.

Born in Cologne, Hartel was a student and later an employee of Franz Schmitz (architect) [de]. Together with Theodor Quester, he operated an office in Krefeld, which planned in 1877 the Christuskirche, Bochum [de] in Gothic Revival style. He died a few months after his appointment as Baumeister of the cathedral in Strasbourg.^[1]