Mäkitalo, Östen – Marconi, Guglielmo – Marsh, Orlando R. – Marx, Erwin Otto – Mauchly, John – Maxwell, James Clerk – Merrill, William Henry – Minorsky, Nicolas – Merz, Charles Hesterman – Metcalfe, Robert – Moll, John L. – Moog, Robert – Moore, Daniel McFarlan –