Hadfield, Robert – Hammer, Edward E. – Hartley, Ralph – Halske, Johann Georg – Heaviside, Oliver – Hefner-Alteneck, Friedrich von – Heil, Oskar – Héroult, Paul – Hertz, Heinrich – Hewitt, Peter Cooper – Hewlett, William Reddington – Hoff, Marcian – Hopkinson, Edward – Hopkinson, John – Hopper, Grace – Horowitz, Paul – Houston, Edwin J. – Hirst, Hugo – Hull, Albert – Hyland, Lawrence A. –