- Irma (Swedish pop singer)
- Irma (Cameroun/French singer)
- Irmak, Sinem
- Irmãos Catita
- Irmãos Verdades
- Irminsul
- Iro (Brooklyn, NY, United States)
- Irodorimidori
- IROH (Russian rapper)
- iroha (English rock band, bassist from Jesu)
- IRON
- Iron & Wine
- Iron & Wine & Bridwell, Ben
- Iron & Wine and Calexico
- Iron Age
- Iron Angel
- Iron Bell Music
- Iron Butterfly
- Iron Chic
- Iron City Houserockers
- Iron Cross (Arlington VA, oi-punk/hardcore band, early 80s)
- Iron Curtain (80s Post-Punk from California)
- Iron Deficiency (Hardcore punk from France)
- Iron Fire
- Iron Heade
- Iron Heel
- Iron Horse (bluegrass band from Alabama)
- Iron Kingdom
- Iron Kobra (Heavy Metal from Germany)
- Iron Lung (American hardcore band)
- Iron Maiden (English heavy metal band)
- Iron Maiden (late 60s prog rock/doom metal band)
- Iron Maidens, The (All female Iron Maiden tribute band from California)
- Iron Maidnem (Hungarian Iron Maiden tribute band)
- Iron Mais
- Iron Man (heavy metal band from Maryland, USA)
- Iron Mask (Belgian power metal band)
- Iron Monkey (United Kingdom sludge metal)
- Iron Mountain (doom metal band from Detroit, MI)
- Iron Mountain String Band
- Iron Oaks
- Iron On
- Iron Reagan
- Iron Savior
- Iron Thrones
- Iron Tomb
- Iron Void
- Iron Years
- Iron Zephyr (Nebraskan Punk-Rock Band)
- Ironbase
- IRONBUNNY
- Ironhand (Aggrotech)
- Ironhorse (Canadian rock band from 70’s)
- Ironic Beats
- iRonica
- Ironik (Québecois hip hop artist)
- Ironik (UK Urban artist)
- Ironik feat. Papaz & D‐Mon, Le
- Ironix, The & Nullzweizwei
- Irons, Jack
- Irons, Jeremy with Goldberg, Whoopi, Marin, Cheech, and Cummings, Jim
- Irons, Troi
- Ironside, Nathan
- Ironstone
- Ironsword
- Irontom
- Irontom feat. Bruno, Aaron
- Ironware
- Ironweed (Stoner Metal Band from Albany / NY)
- Ironwill (Heavy Metal, Turin, Piemonte, Italy)
- Irony of Fate (Switzerland, Metal)
- Irrational
- Irrational (Orlando, Florida based rock band)
- Irrelevant (Australian punk band)
- Irrenoffensive
- Irrepressibles, The
- Irresponsibles, The (From Adelaide, South Australia)
- Irreversible Entanglements
- Irreversible Mechanism
- IRRIS (South Korean girl group)
- Irrlicht
- Irrlichter, Die
- Irrlycht (German black metal)
- Irrwisch
- IRS, The (UK rap group)
- IRU (Georgian pop singer Iru Khechanovi)
- irucaice
- IRUKA
- Irusta, Agustín
- Irvine, Andy & Brady, Paul
