Hera Björk Þórhallsdóttir is an Icelandic singer.
She participated in Dansk Melodi Grand Prix 2009, placing second, and won the OGAE Second Chance Contest 2009. She represented her home country at the Eurovision Song Contest 2010 in Oslo with the song Je ne sais quoi, finishing in 19th place in the final.
She was also a backing singer for Euroband in the 2008 contest in Belgrade, Yohanna in the 2009 contest in Moscow and for María Ólafs in the 2015 contest in Vienna.
She returned to Eurovision after scoring an upset victory in Söngvakeppnin 2024 and represented Iceland at the Eurovision Song Contest 2024 in Malmö with the song Scared of Heights, finishing in last place in the first semifinal.