Alexander Stirling Calder (January 11, 1870 – January 7, 1945) was an American sculptor and teacher.
He was the son of sculptor Alexander Milne Calder and the father of sculptor Alexander (Sandy) Calder.
His best-known works are George Washington as President on the Washington Square Arch in New York City, the Swann Memorial Fountain in Philadelphia, and the Leif Eriksson Memorial in ReykjavÃk, Iceland.