FM Belfast is an electro-pop band from Reykjavík, Iceland. Its members include Lóa Hlín Hjálmtýsdóttir, Árni Rúnar Hlöðversson, Árni Vilhjálmsson and Örvar Þóreyjarson Smárason.

FM Belfast formed in late 2005 as a duo with Árni Rúnar Hlöðversson (Plúseinn) and Lóa Hlín Hjálmtýsdóttir. The band was a studio project for some time until the Iceland Airwaves festival 2006 when the band expanded into a full-on live act. The members now vary from 3 to 8 depending on member availability. The core of the band is made up of Árni Rúnar Hlöðversson (Plúseinn, Hairdoctor, Motion Boys), Árni Vilhjálmsson (Motherfuckers in the House) and Lóa Hlín Hjálmtýsdóttir. When the stars are aligned correctly the band consists of Örvar Þóreyjarson Smárason (múm, Borko, Skakkamanage), Sveinbjorn Hermann Pálsson (Terrordisco), Björn Kristjánsson (Borko, Skakkamanage), Birgitta Birgisdóttir, Eiríkur Orri (múm, Kira Kira, Benni Hemm Hemm)