Johann Schmidt may refer to:
- Johann Adam Schmidt (1759âÂÂ1809), German-Austrian surgeon and ophthalmologist
- Johann Anton Schmidt (1823âÂÂ1905), German botanist
- Johann Friedrich Julius Schmidt (1825âÂÂ1884), German astronomer and geophysicist
- Johann Georg Schmidt (painter) (1685âÂÂ1748), German painter
- Johann Georg Schmidt (engraver) (1694âÂÂ1767), German engraver
- Johann George Schmidt (1707âÂÂ1774), German master builder, architect in Dresden
- Johann Caspar Schmidt (1806âÂÂ1856), the full name of Max Stirner, German philosopher
- Johann Schmidt a.k.a. Red Skull, a Marvel Comics supervillain
- Johann Schmidt (historian) (1693âÂÂ1762), 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