Þorvaldur Makan Sigbjörnsson
Þorvaldur Makan Sigbjörnsson is an Icelandic former international footballer.
He played club football for KA Akureyri, Leiftur, Östers IF, KA Akureyri again, Fram Reykjavik and Valur.
In November 1998 Þorvaldur underwent a trial at English clubs Sheffield United and Stoke City. He later signed for Stoke City.
Þorvaldur played cap for the senior Iceland team, in a 6–1 friendly defeat to Brazil in Brasília on 8 March 2002.
Þorvaldur's wife Katrín was the captain of the Iceland women's national football team. They were married in August 2009, just before Katrín played at UEFA Women's Euro 2009.