Alojzy Rafał Estreicher or Alois Raphael Estreicher was a Polish physician and naturalist who contributed to botany and entomology. He served as a professor of natural history at the University of Krakow. A species of beetle that he discovered was named after him as Carabus estreicheri.
- Occupation
- entomologist, botanist, university teacher, biologist
- Position held
- Rector of the Jagiellonian University
- Citizenship
- Polish–Lithuanian Commonwealth, Austrian Empire
- Born
- June 21, 1786
- Died
