Geist is a surname. Notable people with the surname include:
Bill Geist (born 1945), American author, columnist and journalist Christian Geist (c. 1650–1711), German composer and organist Clarence H. Geist (1866–1938), American public utilities magnate George Geist (born 1955), American politician Joel Geist (born 1982), American actor Kaufman Geist, (1895–1948) American track and field athlete Michael Geist (born 1968), Canadian academic Otto W. Geist (1888–1963), German archaeologist, explorer, and naturalist Raymond H. Geist (1885–1955) American diplomat Richard Geist (1944–2019), American politician Valerius Geist (1938–2021), Canadian biologist Willie Geist (born 1975), American television personality