Johann Schmidt may refer to:
Johann Adam Schmidt (1759–1809), German-Austrian surgeon and ophthalmologist Johann Anton Schmidt (1823–1905), German botanist Johann Friedrich Julius Schmidt (1825–1884), German astronomer and geophysicist Johann Georg Schmidt (painter) (1685–1748), German painter Johann Georg Schmidt (engraver) (1694–1767), German engraver Johann George Schmidt (1707–1774), German master builder, architect in Dresden Johann Caspar Schmidt (1806–1856), the full name of Max Stirner, German philosopher Johann Schmidt a.k.a. Red Skull, a Marvel Comics supervillain Johann Schmidt (historian) (1693–1762), Moravian historian at Palacký University, Olomouc Johann Schmidt (neurologist), physician recognized for early research in neurology after Marc Dax Johann Schmidt (organist), organist who instructed Johann Peter Kellner in 1720
See also Johan Schmidt (born 1964), Belgian pianist Johannes Schmidt (disambiguation) John Smith (disambiguation)