Gier may refer to:

People with the surname

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  • 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