Johann of Nassau-Hadamar
Johann von Nassau-Hadamar is the name of the following people:
- Johann (Nassau-Hadamar) († 1365?), Count of Nassau-Hadamar
- Johann Ernst (Nassau-Hadamar) (1631–1651), member of the younger line of the Nassau-Hadamar family
- Johann Ludwig (Nassau-Hadamar) (1590–1653), regent in the Principality of Nassau-Hadamar