Johann Rainer
Johann Rainer is the name of the following people:
- Johann Rainer (industrialist) (1782–1859), Austrian lead industrialist with factories in Carinthia
- Johann Rainer (politician) (1892–1974), Austrian politician (CSP / ÖVP), member of the Salzburg state parliament
- Johann Rainer (historian) (1923–2015), Austrian historian