 | Warwick Davis als The Leprechaun |
 | Charlie Heath als Cody |
 | Shevonne Durkin als Bridget / William's Daughter |
| Adam Biesk als Ian |
 | Arturo Gil als Drunk at the Pub |
 | Linda Hopkins als Housewife |
 | James Lancaster als William O'Day |
 | Sandy Baron als Morty |
 | Kimmy Robertson als Tourist's Girlfriend |
 | Clint Howard als Tourist |
 | Andrew Craig als Midwestern Dad |
 | David Powledge als Frank |
 | Billy Beck als Homeless Man |
 | Al White als Desk Sergeant |
 | Martha Hackett als Detective |
| Jonathan R. Perkins als Partner |
 | Tony Cox als African-American Leprechaun |
 | Mark Kiely als Talent Agent |
 | Michael McDonald als Waiter |
| Warren A. Stevens als Wiggins |
| Matthew Anderson als Mat |
| Dawn Comer als (voices) |
| Barry Schwartz als (voices) |
| Gabriella Sinclair als (voices) |
| Danny Roque als (voices) |
| Linda Francis | Casting |
| Gabriel Bartalos | Makeup Artist |
| Meta Jardine | Costume Designer |
| Anton Tremblay | Production Design |
| Jane Castle | Director of Photography |
| Richard Gentner | Editor |
| Christopher Roth | Editor |
| Jonathan Elias | Original Music Composer |
| Mark Jones | Characters |
| Mark Jones | Co-Producer |
| Michael Prescott | Co-Producer |
| Mark Amin | Executive Producer |
| Turi Meyer | Writer |
| Alfredo Septién | Writer |
| Donald P. Borchers | Producer |
| Rodman Flender | Director |
| Kurt Bryant | Stunt Coordinator |
| Thomas DeWier | Stunts |
| Arturo Gil | Stunts |
| Roy E. Harrison | Stunts |
| Cole S. McKay | Stunts |
| Douglas O'Neil | Stunts |
| David Tripet | Executive In Charge Of Production |
| Ray Zimmerman | Production Manager |
| Eddie Ziv | First Assistant Director |
| Bob Kay | Second Assistant Director |
| Jamie Thompson | Second Unit Director |
| Page Rosenberg-Marvin | Production Coordinator |
| John Steven Agoglia | Location Manager |
| Paolo Mazzucato | Visual Effects Supervisor |
| Melisa Sánchez | Script Supervisor |
| Blain Brown | Camera Operator |
| Adam Kane | Camera Operator |
| Gergely Fonyó | First Assistant Camera |
| Paul Janossy | Second Assistant Camera |
| Blain Brown | Additional Photography |
| Gabby O'Neill | Assistant Camera |
| Dave Chameides | Steadicam Operator |
| David Moir | Still Photographer |
| Claire Kaufman | Art Direction |
| Alex Cole | Assistant Art Director |
| Randal P. Earnest | Property Master |
| Adolfo Martínez Pérez | Storyboard Artist |
| Elisabeth Fry | Key Makeup Artist |
| Mary A. Williams | Assistant Makeup Artist |
| Mr. Lisa | Additional Hairstylist |
| Marita De Leon | Costume Supervisor |
| Chanthou Kozberg | Assistant Costume Designer |
| Malou Magnusson | Costumer |
| Oliver L. Moss | Production Sound Mixer |
| Brian Moss | Boom Operator |
| John Priebe | Gaffer |
| Ross Dunkerley | Best Boy Electric |
| Cristin Harrigan | Electrician |
| Miro Pokorny | Electrician |
| Steve Charnow | Electrician |
| Jeff Finicle | Electrician |
| Chris Pascuzzo | Electrician |
| Greg Maselli | Dolly Grip |
| Greg Maselli | Key Grip |
| Blake Pike | Key Grip |
| Blake Pike | Dolly Grip |
| Matthew A. Seiss | Best Boy Grip |
| Greg Goldthwaite | Grip |
| Steven L. Henry | Grip |
| Piper Layton | Grip |
| Richard A. Ludt | Grip |
| Carlos Lopez | Assistant Editor |
| Douglas Crise | Assistant Editor |
| James Morioka | Editorial Staff |
| Carl V. Dupré | Editorial Staff |
| Monica Anderson | Editorial Staff |
| Dan Muscarella | Color Timer |
| Jill Scoppa Sweeny | Assistant Production Coordinator |
| Paolo Mazzucato | Producer |
| Lowell Dean Cox | Second Unit First Assistant Director |
| Lowell Dean Cox | Production Manager |
| Jamie Thompson | Second Unit Director of Photography |
| Chad Leeper | Production Supervisor |
| William L. Rice | Production Supervisor |
| Tita Dobson | Script Supervisor |
| Alan Caudillo | First Assistant Camera |
| Monica Anderson | Second Assistant Camera |
| David S. Bouza | Gaffer |
| Yoshikazu Isomura | Electrician |
| Marty Leeper | Electrician |
| Todd Masters | Makeup Effects Designer |
| John Brasher | Sound Re-Recording Mixer |
| Marty Hutcherson | Sound Re-Recording Mixer |
| Adriane Marfiak | Sound Effects Editor |
| Dan Luna | Sound Effects Editor |
| Sarah Brady | ADR Editor |
| Tom Scurry | ADR Editor |
| Chris Jargo | ADR Editor |
| Marilyn Graf | ADR Mixer |
| Lauren Stephens | Dialogue Editor |
| Bill Schlueter | Dialogue Editor |
| Doug Reed | Foley Editor |
| Doug Reed | Foley Artist |
| Eric Hoeschen | Foley Mixer |
| Brian Smith | Sound Recordist |
| Scott Elias | Executive Music Producer |
| Erik DeSando | Extras Casting |
| Danny Hurley | Extras Casting |
| Debe Waisman | Extras Casting |
