List of things named after Christiaan Huygens

Astronomy

 * Cassini–Huygens, mission to Saturn and Titan
 * Huygens (spacecraft), the probe of the Cassini-Huygens mission which landed on Saturn's moon Titan in 2005
 * 2801 Huygens, an asteroid
 * Huygens (crater), martian crater
 * Mons Huygens, a mountain of Earth's Moon
 * Huygens Gap, in the rings of Saturn

Physics

 * Huygens law; see one of:
 * Huygens law (pendulums)
 * Huygens law
 * Huygens–Steiner theorem

Optics

 * Huygens–Fresnel principle
 * Huygens' principle, see Huygens–Fresnel principle
 * Huygens eyepiece, first compound eye piece
 * Huygens Software, a microscope image processing package

Mathematics and games

 * Huygens lemniscate, a figure eight curve
 * König–Huygens formula, see Steiner–Huygens

Other

 * Huygens-Fokker Foundation
 * Huygens' tritone, a musical interval
 * Huygens' engine
 * Christiaan Huygens College, High School in Eindhoven, Netherlands.
 * Huygens College, High School in Heerhugowaard, Netherlands.
 * The Christiaan Huygens, a ship of the Nederland Line.
 * Huygens Scholarship Programme for international students and Dutch students
 * W.I.S.V. Christiaan Huygens: Dutch study guild for the studies Mathematics and Computer Science at the Delft University of Technology
 * Huygens Laboratory: Home of the Physics department at Leiden University
 * Huygens Supercomputer: at SARA, Amsterdam
 * The Huygens-building in Noordwijk, Netherlands
 * The Huygens-building at the Radboud University, Nijmegen, The Netherlands.