| Age | 82 (age at death) |
| Birthday | 25 May, 1869 |
| Birthplace | Hamburg |
| Died | 25 October, 1951 |
| Place of Death | Tucumán, Argentina |
| Zodiac Sign | Gemini |
| Nationality | German |
| Occupation | Scientist |
Karl August Gustav Fiebrig-Gertz (25 May 1869, Hamburg – 25 October 1951, San Miguel de Tucumán) was a German-born Paraguayan botanist.
