Gunnar Birgisson (born 1947), Icelandic politician, a former member of Alþingi and the former mayor of Kópavogur
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Arnthor Birgisson (born 1976) Swedish songwriter and producer born in Reykjavik, Iceland
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Steinar Birgisson (born 1955), Icelandic former handball player who competed in the 1984 Summer Olympics
Since April 2010, Úlfur Hansson has been a touring member of Jónsi (Jón Þór Birgisson of Sigur Rós) international promotional tour of Jónsi's album Go.