Huygens (also Huijgens, Huigens, Huijgen/Huygen, or Huigen) is a Dutch patronymic surname, meaning "son of Hugo". Most references to "Huygens" are to the polymath Christiaan Huygens. Notable people with the surname include:
Jan Huygen (1563–1611), Dutch voyager and historian Constantijn Huygens (1596–1687), Dutch poet, diplomat, scholar and composer Constantijn Huygens, Jr. (1628–1697), Dutch statesman, soldier, and telescope maker, son of Constantijn Huygens Christiaan Huygens (1629–1695), Dutch mathematician, physicist and astronomer, son of Constantijn Huygens Lodewijck Huygens (1631–1699), Dutch diplomat, the third son of Constantijn Huygens Cornélie Huygens (1848–1902), Dutch writer, social democrat and feminist Léon Huygens (1876–1918), Belgian painter Jan Huijgen (1888–1964), Dutch speedwalker Christiaan Huijgens (1897–1963), Dutch long-distance runner Wil Huygen (1922–2009), Dutch children's and fantasy writer, e.g. of Gnomes
Named after Constantijn Sr Constantijn Huygens Prize, Dutch literary award Huygens Institute for Dutch History
Named after Christiaan Huygens
Astronomy: Cassini–Huygens, mission to Saturn and Titan Huygens (spacecraft), the probe of above mission which landed on Saturn's moon Titan in 2005 2801 Huygens, an asteroid Huygens (crater), a Martian crater Mons Huygens, a mountain of Earth's Moon Huygens Gap, main gap in the rings of Saturn Physics: Huygens's principle regarding wave propagation Huygens's law of the pendulum regarding pendulums Huygens–Steiner theorem regarding moment of inertia Mathematics and games: Huygens's tritone, a musical interval Huygens lemniscate, a figure eight curve Microscopes: Huygens eyepiece, first compound eye piece