Johann Castell
Johann Castell is the name of the following people:
- Johann Anton Castell (1810–1867), German landscape painter
- Johann Friedrich zu Castell-Rüdenhausen (1675–1749)
- Johann zu Castell (1468–1528), ruler of the County of Castell from 1498 until his death
- Johann Euchar Schenk von Castell (1625–1697), 61st Bishop of Eichstätt 1685–1697