Johann Schmidt
Johann Schmidt may refer to:
- Johann Adam Schmidt, German-Austrian surgeon and ophthalmologist
- Johann Friedrich Julius Schmidt, German astronomer and geophysicist
- Johann Georg Schmidt (painter), German painter
- Johann Georg Schmidt (engraver), German engraver
- Johann George Schmidt, German master builder, architect in Dresden
- Johann Caspar Schmidt, the full name of Max Stirner, German philosopher
- Johann Schmidt a.k.a. Red Skull, a Marvel Comics supervillain
- Johann Schmidt (historian), 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