Yes, the Prime Minister of Iceland, Jóhanna Sigurðardóttir,
is openly gay.
Jóhanna was originally married to Steinar Jóhannesson in 1970
and had 2 children, before becoming divorced. In 2002, she entered
into a civil union with JónÃna Leósdóttir. The two converted
their civil union into a marriage in 2010 when gay marriage was
legalized in Iceland.