Geiser

Geiser may refer to:


 * Carl Friedrich Geiser (1843–1934), Swiss mathematician
 * David Geiser (1947–2020), American artist
 * Fabian Geiser (born 1983), Swiss footballer (i.e. soccer player)
 * Geiser Manufacturing, late 19th-century and early 20th-century American manufacturing company of farm equipment
 * Jeff Geiser (born 1953), American football coach
 * Linda Geiser (born 1935), Swiss movie and television actress