Carl Oswald Victor Engler (5 January 1842 – 7 February 1925) was a German chemist, academic and politician.

[1] Engler was the son of a pastor, and he studied Chemistry from 1859 at the Karlsruhe Polytechnic where he became a scientific assistant in 1863.

The two-volume edition was based on Anselme Payen's Précis de chimie industrielle.

He took a study trip in 1885 to the production area in the Caucasus, travelling later to the Middle East (Egypt) and to North America.

[3] Besides his researches in petroleum he also studied the properties of ozone and from 1903 he was a member in the Board of BASF, where he was involved in the development of the Haber process.