Sigríður María Beinteinsdóttir, better known as Sigga Beinteins, is an Icelandic singer who competed for her native country in the Eurovision Song Contest three times. She was born on 26 July 1962 in Reykjavík.
She got three 12-point votes overall, two from the United Kingdom and one from Portugal. With Stjórnin, she achieved Iceland's best result of fourth place until 1999, when Selma Björnsdóttir came second.
On 17 February 2024, she was the inaugural awardee of the Heiðurshöll Söngvakeppninnar or the Söngvakeppnin Hall of Fame for her contribution to the competition over the years.