Greiner is a surname, and may refer to:
In arts and entertainment
Gotthelf Greiner (1732–1797), German glass-maker, inventor of modern porcelain Josef Greiner (c. 1886–1947), Austrian writer Lori Greiner (born 1969), American inventor and TV personality Matt Greiner (born 1985), American metalcore drummer Otto Greiner (1869–1916), German painter Stefan-Peter Greiner (born 1966), German violin-maker Virginie Greiner (born 1969), French comic book scriptwriter William Greiner (born 1957), American photographer and painter
In government, military, and politics
Heinz Greiner (1895–1977), German Army General Hermann Greiner (1920–2014), German Luftwaffe ace Jon J. Greiner (21st century), American politician Karin Greiner (born 1967), Austrian politician Kathryn Greiner (born 1946), Australian politician Nick Greiner (born 1947), Australian politician Sandy Greiner (born 1945), American politician Theodor Ludwig Greiner, German revolutionary William P. Greiner, New York state legislator 1914–1916 Willy Greiner (1919–2000), Norwegian politician
In science Helen Greiner (born 1967), American roboticist Larry E. Greiner (1933–2013), American economist and academic Ludwig Greiner (1796–1882), German-Austrian forester Markus Greiner (born 1973), German physicist Walter Greiner (1935–2016), German physicist
In sport
Arthur Greiner (1884–1916), American racecar driver Cindy Greiner (born 1957), American heptathlete Frank Greiner (born 1966), German football coach Grayson Greiner (born 1992), American baseball player Harold Greiner (1907-1993), American baseball manager and restaurant entrepreneur Holden Greiner (born 1991), American basketball player Janine Greiner (born 1981), Swiss curler Matthew Greiner (born 2003), American Luge Athlete Robin Greiner (1932–2021), American pair skater Thomas Greiner (born 1963), German rower
In other fields Bill Greiner (1934–2009), American university president Harold Greiner (1907–1993), American baseball manager and restaurant entrepreneur Justine Greiner (born 1963), American model Lori Greiner (born 1969), American inventor and TV personality Russell Greiner, Canadian computer science professor