Hera Björk Þórhallsdóttir ( born March 29, 1972 in Reykjavík ) is an Icelandic singer who at the Euro Vision Song Contest took part in 2010.
She joined the Euro Vision Song Contest 2010 for Iceland to the partly self-written song Je ne sais quoi, after 2008 and 2009, the then representatives of Iceland, Yohanna Eurobandið and support as a background singer. There she finished in 19th place.
In 2009, Björk wanted to represent Denmark with the song Someday, but it failed in the preliminary round to Niels Brinck. Later her song took while OGAE Second Chance Contest and took part there the first place.