Johann Allgeyer
Johann Allgeyer is the name of the following people:
- Johann Allgeyer (innkeeper) (* around 1602; † 1670), German innkeeper, traveler to Persia
- Johann Georg Allgeyer the Elder Ä. (around 1670 – after 1724), German organ builder
- Johann Georg Allgeyer the Elder J. (around 1719–1806), German organ builder