Alexander von Keyserling
| Alexander von Keyserling | |
|---|---|
| Portrait taken by Georg Friedrich Schlater, before 1870 | |
| Born | 27 August [O.S. 15] 1815 Kabillen Manor, Kabillen, Kreis Talsen, Courland Governorate, Russian Empire (now Kabile, Kuldīga Municipality, Latvia) | 
| Died | 20 May [O.S. 8] 1891 Rayküll Manor, Rayküll, Kreis Harrien, Governorate of Estonia, Russian Empire (now Raikküla, Rapla County, Estonia) | 
| Nationality | Baltic German | 
| Citizenship | Russian Empire German Confederation German Empire | 
| Alma mater | Humboldt University of Berlin | 
| Scientific career | |
| Fields | Geology Botany | 
| Author abbrev. (botany) | Keyserl. | 
Alexander Friedrich Michael Lebrecht Nikolaus Arthur Graf von Keyserling (15 August 1815 – 8 May 1891) was a Baltic German geologist and paleontologist from the Keyserlingk family of Baltic German nobility.