| Irish luck | 10 |
| Irish lower house, The ___ Eireann | 34 |
| Irish lower house | 17 |
| Irish lover | 11 |
| Irish love god | 14 |
| Irish love | 10 |
| Irish lord of yore | 18 |
| Irish locale of song | 20 |
| Irish locale | 12 |
| Irish literature Nobelist | 25 |
| Irish Literary Theatre cofounder | 32 |
| Irish liqueur brand | 19 |
| Irish legislators | 17 |
| Irish legislative house | 23 |
| Irish lasses | 12 |
| Irish lass's name | 21 |
| Irish lass | 10 |
| Irish language offshoot | 23 |
| Irish language | 14 |
| Irish land | 10 |
| Irish lakes | 11 |
| Irish lake or river, or crossword bird | 38 |
| Irish lake or river | 19 |
| Irish lake and river | 20 |
| Irish lake | 10 |
| Irish lad of song | 17 |
| Irish lad | 9 |
| Irish kings' home | 21 |
| Irish king Brian ___ | 20 |
| Irish king Brian | 16 |
| Irish John | 10 |
| Irish isle | 10 |
| Irish islands | 13 |
| Irish island group | 18 |
| Irish island | 12 |
| Irish interjection | 18 |
| Irish insurgents org. | 21 |
| Irish indeed | 12 |
| Irish hunting dog, for one | 26 |
| Irish humanitarian who co-founded U2 | 36 |
| Irish humanitarian | 18 |
| Irish hooch | 11 |
| Irish homeland | 14 |
| Irish historical site | 21 |
| Irish hill | 10 |
| Irish hero, for short | 21 |
| Irish hero, briefly | 19 |
| Irish hero | 10 |
| Irish heir-apparent | 19 |
| Irish health care worker? | 25 |
| Irish head | 10 |
| Irish group: Abbr. | 18 |
| Irish greeting for early birds | 30 |
| Irish greeting | 14 |
| Irish governing house | 21 |
| Irish golfer who won the Open Championship in 1947 | 50 |
| Irish golfer Smyth | 18 |
| Irish god of the sea | 20 |
| Irish god | 9 |
| Irish goblins | 13 |
| Irish goblin | 12 |
| Irish girls | 11 |
| Irish girl's name | 21 |
| Irish game resembling field hockey | 34 |
| Irish Gaelics | 13 |
| Irish Gaelic | 12 |
| Irish fuel | 10 |
| Irish Free State successor | 26 |
| Irish Free State | 16 |
| Irish fortification | 19 |
| Irish form of Helen | 19 |
| Irish follower | 14 |
| Irish folksinger | 16 |
| Irish folk song that was a Grammy-winning vehicle for Metallica | 63 |
| Irish folk singer Sinead | 24 |
| Irish folk singer | 17 |
| Irish folk musician O'Flynn | 31 |
| Irish folk hero | 15 |
| Irish folk dance | 16 |
| Irish folk | 10 |
| Irish first name? | 17 |
| Irish fireplace fuel | 20 |
| Irish festival | 14 |
| Irish fellow | 12 |
| Irish farmers, 1840 | 19 |
| Irish fairy folk | 16 |
| Irish fairies | 13 |
| Irish export | 12 |
| Irish expletive | 15 |
| Irish exclamation | 17 |
| Irish evictee? | 14 |
| Irish euphemism | 15 |
| Irish ethereal queen | 20 |
| Irish equivalent of Edward | 26 |
| Irish ensemble with five singers, a fiddler, and a few PBS specials | 67 |
| Irish energy | 12 |
| Irish emblem | 12 |
| Irish elf | 9 |
| Irish drinking cup | 18 |
| Irish dramatist: 1871-1909 | 26 |