Reiner is a given name. Notable people with this name include:
Reiner Braun (born 1952), German journalist, historian and peace activist Reiner Bredemeyer (1929−1995), German composer Reiner Brockmann (1609−1647), Estonian clergyman, ceremonial poet and translator Reiner Calmund (born 1948), German football executive Reiner Castro (born 1994), Venezuelan footballer Reiner Dennewitz (born 1937), German composer Reiner Dierksen (1908–1943), German navy officer Reiner Edelmann (born 1965), German footballer Reiner Ferreira (born 1985), Brazilian footballer Reiner Frieske (born 1940), German handball player Reiner Fuellmich (born 1958), German former lawyer Reiner Ganschow (born 1945), German handball player Reiner Geye (1949–2002), German footballer Reiner Gies (born 1963), German boxer Reiner Goldberg (1939–2023), German opera singer Reiner Grundmann (born 1955), German sociologist Reiner Hanschke (1940–2015), German field hockey player Reiner Haseloff (born 1954), German politician Reiner Heugabel (born 1963), German wrestler Reiner Hollich (born 1955), German footballer Reiner Hollmann (born 1949), German football manager and former player Reiner Klimke (1936–1999), German equestrian Reiner Knizia (born 1957), German board game designer Reiner Kontressowitz (born 1942), German musicologist and lyricist Reiner Kossmann (1927–2013), German ice hockey player Reiner Kruecken, German nuclear physicist Reiner Kümmel (born 1939), German physicist Reiner Kunze (born 1933), German writer and GDR dissident Reiner Kurth (born 1951), German sprint canoeist Reiner Leist (born 1964), German-American photographer Reiner Lemoine (1949–2006), German entrepreneur Reiner Margreiter (born 1975), Austrian luger Reiner Maurer (born 1960), German football coach and former player Reiner Merkel (1952–2007), German photojournalist Reiner Methe (1964–2011), German handball referee Reiner Michalke (born 1956), German artistic director and jazz musician Reiner Modest (born 1949), Danish rower Reiner E. Moritz (born 1938), German film director and producer Reiner Plaßhenrich (born 1976), German footballer Reiner Pommerin (1943–2024), German historian Reiner Protsch (born 1939), German anthropologist Reiner Salzer (born 1942), German chemist Reiner Schilling (1943–2013), German wrestler Reiner Scholl (born 1961), German sprint canoeist Reiner Schöne (born 1942), German actor Reiner Schürmann (1941–1993), Dutch-American philosopher and professor Reiner Schwarz (1948–2014), Canadian radio and television personality Reiner Stach (born 1951), German author, biographer, publisher, and publicist Reiner Stahel (1892–1955), German military officer Reiner Stenzel (1940–2023), American plasma physicist and professor Reiner Sturm (1950–2003), German murderer Reiner Süß (1930–2015), German singer, entertainer and politician Reiner Thoni (born 1984), Canadian ski mountaineer Reiner Trik (born 1963), German wrestler Reiner Uthoff (1937–2024), German writer and stage director Reiner von Meissen (died 1066), German bishop Reiner Tom Zuidema (1927–2016), Dutch-American anthropologist