Mercy Arms were an Australian indie rock band formed in early 2005.

The band formed in 2005 after Moore met Callinan and Sudek at a Morning After Girls show.

However, the deal would be short-lived, and 2007 saw the band part ways with Capitol after its merger with Virgin.

The band toured with the Pixies, Editors, Cut Copy, Wolf & Cub and the Horrors, and played at the Sydney and Gold Coast legs of the V Festival.

Other groups and projects involving Mercy Arms members include FLRL (Fashion Launches Rocket Launches), started by Kirin J. Callinan & Julian Sudek with Jono Ma of Lost Valentinos & Daniel Stricker of Midnight Juggernauts, Kirin performing solo as Kirin J. Callinan and playing guitar in Jack Ladder's band, Julian Sudek playing in Canyons & Danimals, Ash Moss playing bass in Dark Bells.