Anders Gideon Tom Ståhlberg (or Stahlberg) (26 January 1908, Surte near Gothenburg – 26 May 1967, Leningrad) was a Swedish chess grandmaster.He won the Swedish Chess Championship of 1927, became Nordic champion in 1929, and held it until 1939.Ståhlberg came to fame when he won matches against star players Rudolf Spielmann and Aron Nimzowitsch in 1933 and 1934 respectively, and came third (after Alekhine) in Dresden 1936, and second (after Fine) in Stockholm 1937.