Reuter or Reutter is a surname. Notable people with the surname include:

• Christian Reuter (1665– c. 1712), writer
• Edzard Reuter (1928–2024), Daimler-Benz manager
• Émile Reuter (1874–1973), Luxembourgian politician
• Enzio Reuter (1867–1951), entomologist
• Ernst Reuter (1889–1953), mayor of Berlin
• Fritz Reuter (1810–1874), poet
• Gabriele Reuter (1859–1941), writer
• George François Reuter (1805–1872), French botanist
• Irving Jacob Reuter (1885–1972), president of Oldsmobile, philanthropist
• James B. Reuter (1916–2012), Jesuit priest
• Ludwig von Reuter (1869–1943), admiral
• Manuel Reuter (born 1961), race driver
• Milly Reuter (1904–1976), athlete
• Odo Morannal Reuter (1850–1913), Finnish zoologist and poet
• Otto Sigfrid Reuter (1876–1945), German writer and neopagan organiser
• Paul Reuter (1816–1899), founder of Reuters news agency
• Peter Reuter (born 1944), American criminologist
• Renan Soares Reuter (born 1990), Brazilian footballer
• Renee Reuter, American politician
• Stefan Reuter (born 1966), football (soccer) player
• Timothy Reuter (1947–2002), German-British historian
• Walter Reuter (1906–2005), photographer and resistance fighter
• Willem Reuter (c. 1642–1681), Flemish painter

• Georg Reutter II, (1708–1772), Austrian composer
• Hermann Reutter (1900–1985), German composer and pianist
• Katherine Reutter (born 1988), American short track skater
• Otto Reutter (1870–1931), comedian
• Wilhelm Reutter, founder of Reutter Carosserie-Werke in Stuttgart, now Porsche and Recaro seats

• Reuters, international news agency founded by Reuter
• Reuter Organ Company

• Reuther (surname)
• Reiter (surname)