Corneille Antoine Jean Abram Oudemans or Cornelis Antoon Jan Abraham Oudemans was a Dutch botanist and physician who specialized in fungal systematics.
- Occupation
- botanist, physician, university teacher, mycologist
- Position held
- Rector of the university of Amsterdam
- Citizenship
- Kingdom of the Netherlands
- Born
- December 7, 1825
- Died
- August 29, 1906
