Gier

Gier may refer to:
 * Gier (river), a river in France
 * Aqueduct of the Gier, an ancient Roman aqueduct
 * Greed (Jelinek novel) or Gier, a 2000 novel by Elfriede Jelinek
 * GIER, a 1961 computer made by Regnecentralen

People with the surname

 * Jack de Gier (born 1968), Dutch retired football striker
 * Kerstin Gier (born 1966), German author
 * Markus Gier (born 1970), Swiss competition rower and Olympic champion
 * Michael Gier (born 1967), Swiss competition rower and Olympic champion
 * Rob Gier (born 1981), English–Filipino footballer