 | Art Carney als Narrator / Blarney Kilakilarney (voice) |
 | Peggy Cass als Faye (voice) |
 | Bob McFadden als Lord of the Leprechauns (voice) |
| Ken Jennings als Dinty Doyle / Father Leprechaun (voice) |
| Gerry Matthews als (voice) |
| Christine Mitchell als Old Mag |
| Glynis Bieg als Girl (voice) |
| Frankie Moronski als Boy (voice) |
| Aidan Nicolle als (voice) (uncredited) |
| Jules Bass | Director |
| Arthur Rankin, Jr. | Director |
| Romeo Muller | Writer |
| Jules Bass | Producer |
| Lee Dannacher | Associate Producer |
| Arthur Rankin, Jr. | Producer |
| Masaki Îzuka | Associate Producer |
| Maury Laws | Music |
| Paul Coker Jr. | Production Design |
| John Curcio | Sound Recordist |
| Bob Elder | Sound Recordist |
