- Irish Brigade, The (Irish Rebel Band from Co. Tyrone (Northern Ireland))
- Irish Coffee (Belgian hard rock band)
- Irish Descendants, The
- Irish Drovers
- Irish Front, The (Death metal band)
- Irish Handcuffs
- Irish Moutarde
- Irish Mythen
- Irish Rovers, The (Irish Canadian folk rock aka The Rovers)
- Irish Stew of Sindidun
- Irish Tenors, The
- Irish Women in Harmony
- Irist
- Irko (French rapper)
- Irl Sam
- Irma (Swedish pop singer)
- Irma (Cameroun/French singer)
- Irma Thomas & the Professionals (New Orleans Blues)
- Irma y Oswado
- Irmak, Sinem
- Irmão Victor
- Irmãos Catita
- Irmãos Verdades
- Irminsul
- Irnini Mons
- 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 Lung (American hardcore / powerviolence 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 Oaks
- Iron On
- Iron Reagan
- Iron Savior
- Iron Thrones
- Iron Tomb
- Iron Void
- Iron Years
- Iron Zephyr (Nebraskan Punk-Rock Band)
- Ironbase
- Ironbite (Heavy Metal Band)
- IRONBUNNY
- Ironheart
- Ironhorse (Canadian rock band from 70’s)
- Ironic Beats
- iRonica
- Ironik (Québecois hip hop artist)
- Ironik (UK Urban artist)
- Ironix, The & Nullzweizwei
- Ironmouse
- Irons, Jack
- Irons, Jeremy with Goldberg, Whoopi, Marin, Cheech, and Cummings, Jim
- Irons, Troi
- Ironside, Nathan
- Ironstone
- Ironsword (Portuguese Heavy Metal)
- Irontom
- Irontom feat. Bruno, Aaron
- Ironvytas (Lithuanian rapper)
- Ironvytas & Blažytė, Raminta
- Ironweed (Stoner Metal Band from Albany / NY)
- Ironweed Project, The
- Ironwill (Heavy Metal, Turin, Piemonte, Italy)
- Irony of Fate (New Wave, Goth Rock)