Kayser

Kayser is a derivation of the Germanic Kaiser surname, and may refer to:
 * Kayser (surname)
 * Kayser (band), a Swedish thrash metal band
 * Kayser (unit) in spectroscopy, equal to reciprocal centimeter
 * Käyser Airstrip, small airport in Suriname
 * Kayser Mountain, Hall Land, Greenland
 * Käyser Mountains, Sipaliwini, Suriname
 * Kayser Sung, Asian journalist
 * Kayser–Fleischer ring, a dark ring that appears to encircle the iris of the eye
 * Kayser-Roth, a manufacturer of hosiery and intimate apparel
 * Kayser-Threde, a company in Munich, Germany, developing equipment for astronautics, science and industry
 * George R. Kayser House, Arizona, United States
 * Kayser's Beach, a village in South Africa
 * Kayser, a unit of wavenumber in the CGS system, named after Heinrich Kayser