| Year: | 1966 |
| Country: | Ireland |
| Preselection: | National final |
| Preselection Date: | 25 January 1966 |
| Entrant: | Dickie Rock |
| Song: | Come Back to Stay |
| Final Result: | 4th, 14 points |
The Irish National Final was held on Tuesday 25 January 1966 by RTÉ TV in Dublin. Brendan O'Reilly was the host.
| Draw | Artist | Song | Place | Points | |
|---|---|---|---|---|---|
| 1 | Deirdre Wynne | "There's No Sense In Being A Fool" | 5 | 4 | |
| 2 | Dickie Rock | "Come Back to Stay" | 1 | 20 | |
| 3 | The Ludlows | "A Sailor Will Sail" | 8 | 3 | |
| 4 | Butch Moore | "I See Your Face" | 10 | 0 | |
| 5 | Sonny Knowles | "The Menace From Ennis" | 10 | 0 | |
| 6 | Deirdre Wynne | "Why Don't You Say It's So?" | 3 | 8 | |
| 7 | Dickie Rock | "Can't Make Up My Mind" | 5 | 4 | |
| 8 | Butch Moore | "Why Don't I Believe In Her?" | 4 | 7 | |
| 9 | Sonny Knowles | "Chuaigh Mé Suas Don Chluiche Mór" | 10 | 0 | |
| 10 | The Ludlows | "The Winds Thro' The Rafters" | 2 | 9 | |
| 11 | Dickie Rock | "Oh! Why?" | 9 | 1 | |
| 12 | Deirdre Wynne | "Haven't You?" | 5 | 4 |
Ireland started at placement 17th at the end of the start field and finished 4th place with 14 points.