Johann Gruber (disambiguation)
Johann Gruber is the name of the following people:
- Johann Gruber (1889–1944), Austrian theologian and resistance fighter
- Johann Gruber (lawyer) (1833–1909), German lawyer and civil servant
- Johann Gruber (resistance fighter, 1903) (1903–1943), Austrian iron turner and victim of the Nazi justice system
- Johann Gruber (ornithologist) (1917–2003), Austrian teacher and ornithologist
- Johann Daniel Gruber (1686–1748), German librarian, lawyer, historiographer and editor
- Johann Gottfried Gruber (1774–1851), German literary historian and writer
- Johann Nepomuk Gruber (1776–1811), Austrian numismatist