Maier is a surname, and may refer to:
- Bernhard Maier (born 1963), German professor of religious studies
- Jeffrey Maier (born 1984), 1996 World Series baseball fan
- Johann Maier von Eck (1486-1543), German Catholic theologian
- Henry W. Maier (1918-1994), American politician
- Hermann Maier (born 1972), Austrian alpine skier
- Michael Maier (1568–1622), German physician, counselor, alchemist and epigramist
- Paul Maier (born 1930), American history professor and novelist
- Pauline Maier (born 1938), American history professor
- Rudolf Robert Maier 1824-1888), German pathologist
- Sascha Maier (born 1974), retired German footballer
- Sepp Maier (born 1944), retired German football goalkeeper
- Vivian Maier (1926-2009), amateur photographer
- Werner L. Maier (born 1966), retired German football player
- William J. Maier (1876-1941), New York State politician