| Irish seaport of song | 21 |
| Irish seaport or its county | 27 |
| Irish secretary? | 16 |
| Irish seminary? | 15 |
| Irish setter, e.g. | 18 |
| Irish side dish? | 16 |
| Irish singer | 12 |
| Irish singer O'Connor | 25 |
| Irish singer who lives in a castle | 34 |
| Irish singer with eight platinum U.S. albums | 44 |
| Irish singer with the album "The Memory of Trees" | 59 |
| Irish singing star | 18 |
| Irish spider's windfall? | 28 |
| Irish spirits | 13 |
| Irish Spring alternative | 24 |
| Irish Spring competitor | 23 |
| Irish Spring ingredient | 23 |
| Irish Spring variety | 20 |
| Irish sprite | 12 |
| Irish stamp word | 16 |
| Irish statesman | 15 |
| Irish statesman Cosgrave | 24 |
| Irish statesman de Valera | 25 |
| Irish statesman Eamon De ___ | 28 |
| Irish statesman ___ de Valera | 29 |
| Irish stepdance music | 21 |
| Irish stew ingredient | 21 |
| Irish stew ingredients | 22 |
| Irish stew tidbit | 17 |
| Irish surname starter | 21 |
| Irish sweater worn by fishermen | 31 |
| Irish Sweepstakes figures | 25 |
| Irish sweetheart | 16 |
| Irish symbol | 12 |
| Irish tax | 9 |
| Irish tenor Ronan | 17 |
| Irish tenor Tynan | 17 |
| Irish terrier, e.g. | 19 |
| Irish terriers, e.g. | 20 |
| Irish tongue | 12 |
| Irish Tony winner Patrick | 25 |
| Irish town or county | 20 |
| Irish tribe | 11 |
| Irish tune, when trilled in Turin? | 34 |
| Irish tyranny? | 14 |
| Irish V.I.P.'s | 18 |
| Irish vagabonds | 15 |
| Irish version of an old French coin? | 36 |
| Irish version of John | 21 |
| Irish village | 13 |
| Irish wailer | 12 |
| Irish weather forecast? | 23 |
| Irish whiskey brand | 19 |
| Irish whisky | 12 |
| Irish wit | 9 |
| Irish wit and playwright | 24 |
| Irish wit Oscar | 15 |
| Irish woman patriot | 19 |
| Irish woodworker? | 17 |
| Irish writer | 12 |
| Irish writer Behan | 18 |
| Irish writer Brendan | 20 |
| Irish writer Edna | 17 |
| Irish writer O'Brien | 24 |
| Irish writer who coined the word "quark" | 50 |
| Irish writer who said "Always forgive your enemies; nothing annoys them so much" | 90 |
| Irish writer-teacher | 20 |
| Irish writing | 13 |
| Irish __ | 8 |
| Irish ___ | 9 |
| Irish ____ | 10 |
| Irish _____ | 11 |
| Irish _____ Prince Edward Island special crop | 47 |
| Irish, e.g. | 11 |
| Irish, for one | 14 |
| Irish-born actor Milo | 21 |
| Irish-born actor whose character in "Barbarella" inspired the band name Duran Duran | 93 |
| Irish-born actress McKenna | 26 |
| Irish-born player John of Manchester United | 43 |
| Irish-born Tony winner Patrick | 30 |
| Irish-Gaelic | 12 |
| Irish-Sea isle | 14 |
| Irish-stew ingredient | 21 |
| Irish-themed Vegas casino | 25 |
| Irish-themed Vegas casino that features a tattoo parlor owned by Mötley Crüe's Vince Neil | 99 |
| Irish: Abbr. | 12 |
| Irishman | 8 |
| Irishman or Welshman | 20 |
| Irishman or Welshman, e.g. | 26 |
| Irishman who was a Time magazine Person of the Year in 2005 | 59 |
| Irishman's activity on March 17 | 35 |
| Irishman's dance | 20 |
| Irishman's darling | 22 |
| Irishman's expression of surprise | 37 |
| Irishman's home goods store? | 32 |
| Irishman's pride | 20 |
| Irishman, e.g. | 14 |
| Irishman, informally | 20 |
| Irishman: Var. | 14 |
| Irishmen | 8 |