Halla Margrét Árnadóttir, sometimes known professionally as just Halla Margrét, is an Icelandic singer. She represented her country as its second-ever entrant at the Eurovision Song Contest 1987 with the song Hægt og hljótt, which marked her debut on the world stage. She finished in 16th place overall. She is still performing today, since 1997 she has been working as an opera singer.