Baier is a surname of German origin with the meaning "person from Bavaria". Notable people with the surname include:
Annette Baier, (1929–2012), New Zealand moral philosopher Annerose Baier (1946–2022), German ice dancer Benjamin Baier (born 1988), German footballer Bernhard Baier (1912–2003), German water polo player Bret Baier (born 1970), American reporter Christel Baier (born 1965), German computer scientist Daniel Baier (born 1984), German footballer Ernst Baier (1905–2001), German figure skater Fred Baier (born 1949), British furniture designer Fritz Baier (1923–2012), German politician Herwig Baier (born 1965), German neurobiologist Jo Baier (born 1949), German filmmaker Johann Jacob Baier (1677–1735), German doctor and paleontologist Johann Wilhelm Baier (1647–1697), German Lutheran theologian Kurt Baier (1917–2010), Austrian moral philosopher Leslie Joan Baier, American scientist Lothar Baier (1942–2004), German author Lowell E. Baier (born 1940), American attorney and environmental historian Lionel Baier (born 1975), Swiss film director Maik Baier (born 1989), German racing cyclist Paul Baier (born 1985), American hockey player Paulo Baier (born 1974), Brazilian footballer Richard Baier (born 1926), German journalist Rudolf Baier (1892–1945), German road racing cyclist Sherri Baier, Canadian figure skater Sibylle Baier (born 1955), German folk singer Viktor Baier (born 2005), Czech footballer Pluta Baier (born 2011), Cypriot philosopher
See also Bajer (disambiguation) Bayer (surname) Beyer, a surname