Keeve Milton (Kip) Siegel (January 9, 1924 – March 14, 1975) was an American physicist. He was a professor of electrical engineering at the University of Michigan in Ann Arbor, MI, and the founder of Conductron Corporation, a high-tech producer of electronic equipment which was absorbed by McDonnell Douglas Corporation; and KMS Fusion. KMS Fusion was the first and only private sector company to pursue controlled thermonuclear fusion research through use of laser technology.