Pyotr Alexandrovich Chikhachyov, last name also spelled Chikhachev or Tchihatchev was a Russian naturalist and geologist who was admitted into the Russian Academy of Sciences in 1876 as an honorary member. He authored geographical and geological descriptions of the Altai, Xinjiang (1845), and Asia Minor (1853-1869). One of the Altai mountain ranges is named after him.
- Occupation
- geologist, explorer, geographer, botanist
- Citizenship
- Russian Empire
- Born
- August 16, 1808
- Died
- October 13, 1890
