Huygens (also Huijgens, Huigens, Huijgen/Huygen, or Huigen) is a Dutch language, Dutch patronymic surname, meaning "son of Hugo". Most references to "Huygens" are to the polymath Christiaan Huygens. Notable people with the surname include:
* Jan Huyghen van Linschoten, 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 (book), 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
* Rings of Saturn#Huygens Gap, Huygens Gap, main gap in the rings of Saturn
Physics:
* Huygens–Fresnel principle, Huygens' principle regarding wave propagation
* Huygens law regarding pendulums
* Huygens–Steiner theorem regarding moment of inertia
Mathematics and games:
* Huygens' tritone, a musical interval
* Huygens lemniscate, a figure eight curve
Microscopes:
* Huygens eyepiece, first compound eye piece
* Huygens Software, a microscope image processing package
{{surname, Huygens
Dutch-language surnames
Patronymic surnames
