- Francesca prod. by Jennifer Decilveo
- From Eden prod. by Rob Kirwan
- From Eden (Live)
- From Eden (Live at Sofar Sounds)
- God Rest Ye Merry Gentlemen (BBC Radio 1 Live Lounge)
- Good Parts (when the quality is bad but I am) by IZUNICORN prod. by Rob Zombie
- How Deep Is Your Love? by Hans Zimmer, Calvin Harris, Farruko, Martin Garrix, Tom Odell & Hozier prod. by Calvin Harris, CMC$, Dan Grech-Marguerat, La Paciencia & Sharo Towers
- Hozier Discography by Genius Users
- Humours of Whiskey
- Hymnal (Unreleased)
- Hymn to Virgil (Unreleased)
- I, Carrion (Icarian) prod. by Jennifer Decilveo
- I, Carrion (Icarian) (City Sessions (Amazon Music Live))
- I Could Be Yours
- In a Week (Ft. Karen Cowley) prod. by Rob Kirwan
- In the Woods Somewhere prod. by Rob Kirwan
- In Your Own Sweet Time by ZASKA (Ft. Karen Cowley)
- It Will Come Back prod. by Rob Kirwan
- Jackboot Jump (Live)
- Jackie and Wilson prod. by Rob Kirwan