| Naveen Andrews | Sayid Jarrah
(credit only) |
| Henry Ian Cusick | Desmond Hume
(credit only) |
| Emilie de Ravin | Claire Littleton
(credit only) |
| Michael Emerson | Ben Linus |
| Matthew Fox | Dr. Jack Shephard |
| Jorge Garcia | Hugo 'Hurley' Reyes
(credit only) |
| Josh Holloway | James 'Sawyer' Ford |
| Daniel Dae Kim | Jin-Soo Kwon
(credit only) |
| Yunjin Kim | Sun-Hwa Kwon
(credit only) |
| Evangeline Lilly | Kate Austen |
| Elizabeth Mitchell | Dr. Juliet Burke |
| Dominic Monaghan | Charlie Pace
(credit only) |
| Terry O'Quinn | John Locke
(credit only) |
| Kiele Sanchez | Nikki Fernandez
(credit only) |
| Rodrigo Santoro | Paulo
(credit only) |
| Bai Ling | Achara |
| M.C. Gainey | Tom Friendly |
| Tania Raymonde | Alex Rousseau |
| Blake Bashoff | Karl Martin |
| Diana Scarwid | Isabel |
| Kimberley Joseph | Cindy |
| James Huang | Chet |
| Siwathep Sunapo | Thai Man |
| Shannon Chanhthanam | Thai Boy |
| Mickey Graue | Zach
(uncredited) |
| Kiersten Havelock | Emma
(uncredited) |