Ivan Efimovich Orlov was a Russian philosopher, a forerunner of relevant and other substructural logics, and an industrial chemist. The date of his death is unknown, but is most likely between 1936 and 1937.
- Occupation
- chemist, philosopher
- Citizenship
- Soviet Union
- Born
- October 25, 1886, October 13, 1886
- Died
- October 13, 1936
