Peter Klimentjevich Engelmeyer (10 April 1855 – c.
1941) was a Russian engineer and proponent of technology and positivism.
Engelmeyer was of German origin.
Engelmeyer was in correspondence with the Austrian physicist and philosopher of science Ernst Mach.
He informed Mach of his growing influence in Russia, affecting such scientists as Nikolay Yegorovich Zhukovsky.Engelmeier regarded all human activity as falling into three major categories: scientific, artistic and technical.