An Icelandic actor, comedian and screenwriter, best known as a member of the comedy group Spaugstofan. He has starred in a number of films and television series since the late 1970s, as well as acting in the National Theatre of Iceland. He is famous for his recurring characters in the Spaugstofan television series, including Ragnar Reykás and Kristján Ólafsson. Sigurður has starred in many seasons of the annual television special Áramótaskaupið. He is also one of the leading Icelandic voice actors and has dubbed numerous animated features. In March 2015, Sigurjóns appeared in the music video for "Crystals," the lead single from the Of Monsters and Men album "Beneath the Skin."

Sigurður Sigurjónsson (f. 6. júlí 1955) er íslenskur leikari, leikstjóri og handritshöfundur. Hann lauk prófi frá Leiklistarskóla Íslands 1976 og hefur eftir það farið með gríðarlegan fjölda hlutverka á sviði, í sjónvarpi og kvikmyndum. Hann er líklega þekktastur fyrir hlutverk sín í gamanþáttum á borð við Spaugstofuna og sex Áramótaskaupum. Fyrsta kvikmyndahlutverk hans var í mynd Ágústs Guðmundssonar, Land og synir, frá 1980.