Arna Sigríður Albertsdóttir (born 8 June 1990) is an Icelandic handcyclist. Formerly a multi-sport athlete, she took up handcycling after being paralyzed in a skiing accident in 2006. In 2015, she became the first Icelandic athlete to compete in the UCI World Championships and in 2021, she became the first Icelander to participate in handcycling at the Paralympics.