Rufus Oldenburger (6 July 1908, Grand Rapids, Michigan – 22 November 1969) was an American mathematician and mechanical engineer.
[1][2] After teaching mathematics at the University of Michigan, at the Case Institute of Technology, at Illinois Institute of Technology, and at DePaul University, he changed the focus of his research from pure mathematics to mechanical engineering and automatic control.
For the academic year 1937–38 he was a visiting scholar at the Institute for Advanced Study in Princeton.
He also developed a computer-type gas turbine control, a signal stabilization device, and a rapid method of finding the roots of algebraic equations especially for the problem of control design.
He read and spoke eight modern languages and lectured abroad extensively.