Ástþór Magnússon Wium (born 4 August 1953) is an Icelandic businessman and peace activist, who is best known for being the founder of the first credit card company in Iceland and as a perennial candidate for the office of President of Iceland. Despite spending millions^[1] of ISK on social media ads and promotion, he failed to reach the 1500 signatures needed to run for the 2024 election in time.^[2] In the 2004 election, he got 1.9% of the total vote, which shrunk down to 0.3% in 2016^[3]

After finishing the landspróf (national examination), Ástþór studied at the Commercial College of Iceland before moving to the United Kingdom in order to study commercial photography and marketing at the Medway College of Art and Design.^[4]

Ástþór brought Eurocard to Iceland in 1979, making it the first credit card company operating in Iceland. The success of Eurocard made him financially independent.^[4]

Ástþór unsuccessfully campaigned for the post of President of Iceland four times: in 1996, 2004, 2012 and 2016. In 2000, he failed to get the necessary 1,500 signatures and therefore was not on the ballot. On 1 June 2012, his candidacy was revoked because he had failed to obtain the mandatory certificate from the senior electoral officer in the Northwest constituency; as he was the only challenger in 2000, this meant that the sitting President Ólafur Ragnar Grímsson was re-elected unopposed.^[5] Ástþór was the founder and chairperson of the Democracy Movement, a political party founded in 1998 for the purpose of promoting direct democracy and e-democracy. The party folded after the 2009 general elections. He also founded the peace movement Peace2000.

In 1996, he distributed the book The Use of Bessastaðir to every household in Iceland.^[6]

Ástþór has at various points been critical of the foreign policy of the United States, particularly during the Iraq War, which he vehemently opposed.^[7] In later years, Ástþór has frequently taken a pro-Russia stance in various disputes between Russia and the Western world. Notably, he expressed support for Russia's annexation of Crimea in 2014 and suggested that Russian President Vladimir Putin should have been awarded the Nobel Peace Prize for arranging it.^[8] Ástþór has been critical of international sanctions placed on Russia in wake of the invasion of Ukraine, and in 2023 he argued that the sanctions constituted an act of genocide against Russian people.^[9]

On 3 January 2024, Ástþór announced that he would run for President for the sixth time.^[10]

Ástþór is married to the Russian-born lawyer Natalia Wium.^[11]