- Ironwood
- Ironwood Bluff
- Ironwood Rain
- Ironwood Singers
- Irony and Omen Sade
- Irony Of Fate
- Irony of Lightfoot
- Iroquois Confederacy
- IRP-3
- Irr. App. (Ext.)
- Irra Petina
- Irradio
- Irrational Exuberance
- Irrational Fear
- Irrational Public Radio
- Irregular
- Irregular Synth
- Irreka
- Irrelevant
- Irrelevant
- Irrenoffensive
- Irresistibles
- Irresponsible
- Irreversible
- Irreversíveis
- Irris Hollanes Lua
- Irritable Tribe of Poets
- Irritant
- Irritating Rainbow
- Irrivaly
- Irrlichter
- Irrwisch
- IRS
- I.R.S.
- Irshad Khan
- Irtaman
- IRUKA
- Irukandji