The characters from the America drama television series Lost were created by Damon Lindelof and J. J. Abrams. The series follows the lives of plane crash survivors on a mysterious tropical island, after a commercial passenger jet from the fictional Oceanic Airlines crashes somewhere in the South Pacific. Each episode typically features a primary storyline on the island as well as a secondary storyline, a flashback from another point in a character's life.

Out of the 324 people on board Oceanic Flight 815, there are 71 initial survivors (70 humans and one dog) spread across the three sections of the plane crash.Goddard, Drew (writer) & Vaughan, Brian K. (writer) & Williams, Stephen (director), "Confirmed Dead". Lost, ABC. Episode 2, season 4. Aired on February 7, 2008.

Casting and development Many of the first season roles were a result of the executive producers' liking of various actors. The main character Jack was originally going to die in the pilot, and was hoped to be played by Michael Keaton; however, ABC executives were adamant that Jack live. Before it was decided that Jack would live, Kate was to emerge as the leader of the survivors; she was originally conceived to be more like the character of Rose. Dominic Monaghan auditioned for the role of Sawyer, who at the time was supposed to be a suit-wearing city con man. The producers enjoyed Monaghan's performance and changed the character of Charlie, originally a middle-aged former rock star, to fit him. Jorge Garcia also auditioned for Sawyer, and the part of Hurley was written for him. When Josh Holloway auditioned for Sawyer, the producers liked the edge he brought to the character (he reportedly kicked a chair when he forgot his lines and got angry in the audition) and his southern accent, so they changed Sawyer to fit Holloway's acting. Yunjin Kim auditioned for Kate, but the producers wrote the character of Sun for her and the character of Jin, portrayed by Daniel Dae Kim, to be her husband. Sayid, played by Naveen Andrews, was also not in the original script. Locke and Michael were written with their actors in mind. Emilie de Ravin, who plays Claire, was originally cast in what was supposed to be a recurring role. Kimberley Joseph's character, an unnamed flight attendant, was originally scripted to be killed off in the pilot, but was brought back in Season 2 with the name Cindy and continued to make guest appearances through to the final season, becoming one of the last handful of Flight 815 survivors.

Cast Main cast Actor Character Seasons 1 2 3 4 5 6 Naveen Andrews Sayid Jarrah colspan="6" Emilie de Ravin Claire Littleton colspan="4" Matthew Fox Jack Shephard colspan="6" Jorge Garcia Hugo "Hurley" Reyes colspan="6" Maggie Grace Shannon Rutherford colspan="2" colspan="2" Josh Holloway James "Sawyer" Ford colspan="6" Malcolm David Kelley Walt Lloyd colspan="2" colspan="3" Daniel Dae Kim Jin-Soo Kwon colspan="6" Yunjin Kim Sun-Hwa Kwon colspan="6" Evangeline Lilly Kate Austen colspan="6" Dominic Monaghan Charlie Pace colspan="4" Terry O'Quinn John Locke / Man in Black colspan="6" Harold Perrineau Michael Dawson colspan="2" Ian Somerhalder Boone Carlyle colspan="2" colspan="2" Michelle Rodriguez Ana Lucia Cortez colspan="2" colspan="2" Adewale Akinnuoye-Agbaje Mr. Eko colspan="2" colspan="3" Cynthia Watros Elizabeth "Libby" Smith Henry Ian Cusick Desmond Hume colspan="4" Michael Emerson Benjamin Linus colspan="4" Elizabeth Mitchell Juliet Burke colspan="2" colspan="4" Kiele Sanchez Nikki Fernandez colspan="2" colspan="3" Rodrigo Santoro Paulo colspan="2" colspan="3" Jeremy Davies Daniel Faraday colspan="3" colspan="3" Ken Leung Miles Straume colspan="3" colspan="3" Rebecca Mader Charlotte Lewis colspan="3" colspan="3" Néstor Carbonell Richard Alpert colspan="2" colspan="3" Jeff Fahey Frank Lapidus colspan="3" colspan="2" Zuleikha Robinson Ilana Verdansky colspan="4" Sam Anderson Bernard Nadler colspan="2" L. Scott Caldwell Rose Nadler colspan="2" colspan="2" François Chau Pierre Chang colspan="3" Fionnula Flanagan Eloise Hawking colspan="2" John Terry Christian Shephard / Man in Black colspan="2" colspan="2" Sonya Walger Penny Widmore colspan="3"

Recurring cast Actor Character Seasons 1 2 3 4 5 6 William Blanchette Aaron Littleton colspan="6" Julie Bowen Sarah Shephard colspan="2" colspan="3" Beth Broderick Diane Janssen colspan="2" colspan="2" Byron Chung Woo-Jung Paik colspan="2" Mira Furlan Danielle Rousseau colspan="5" Andrea Gabriel Nadia Jazeem colspan="3" M. C. Gainey Tom Friendly colspan="3" colspan="2" Neil Hopkins Liam Pace colspan="3" colspan="2" Kimberley Joseph Cindy Chandler colspan="3" colspan="2" Fredric Lehne Edward Mars colspan="2" colspan="2" William Mapother Ethan Rom colspan="2" Kevin Tighe Anthony Cooper colspan="2" colspan="2" Michael Bowen Danny Pickett colspan="2" colspan="3" Clancy Brown Kelvin Inman colspan="4" Brett Cullen Goodwin Stanhope colspan="2" colspan="2" Alan Dale Charles Widmore colspan="2" colspan="3" Kim Dickens Cassidy Phillips April Grace Bea Klugh colspan="3" Mickey Graue Zach colspan="2" Kiersten Havelock Emma colspan="2" Tony Lee Jae Lee colspan="3" Adetokumboh M'Cormack Yemi colspan="3" Tania Raymonde Alex Rousseau colspan="3" Katey Sagal Helen Norwood colspan="3" Teddy Wells Ivan colspan="2" colspan="3" Blake Bashoff Karl Martin colspan="2" colspan="2" colspan="2" Andrew Divoff Mikhail Bakunin colspan="2" colspan="2" Brian Goodman Ryan Pryce colspan="2" colspan="3" Jon Gries Roger Linus colspan="2" Doug Hutchison Horace Goodspeed colspan="2" colspan="2" Paula Malcolmson Colleen Pickett colspan="2" colspan="3" Tracy Middendorf colspan="2" colspan="3" Lana Parrilla Greta colspan="2" colspan="3" Marsha Thomason Naomi Dorrit colspan="2" colspan="2" Robin Weigert Rachel Carlson colspan="2" colspan="3" Anthony Azizi Omar colspan="3" Zoë Bell Regina colspan="3" colspan="2" Grant Bowler Gault colspan="3" colspan="2" Susan Duerden Carole Littleton colspan="3" Kevin Durand Martin Keamy colspan="3" Lance Reddick Matthew Abaddon colspan="3" Fisher Stevens George Minkowski colspan="3" Reiko Aylesworth Amy Goodspeed colspan="4" Marvin DeFreitas Charlie Hume colspan="4" Patrick Fischler Phil colspan="4" Brad William Henke Bram colspan="4" Leslie Ishii Lara Chang colspan="4" Eric Lange Stuart Radzinsky colspan="4" Molly McGivern colspan="4" Marc Menard Montand colspan="4" Mark Pellegrino Jacob colspan="4" colspan="2" Saïd Taghmaoui Caesar colspan="4" Titus Welliver Man in Black colspan="4" colspan="2" Sean Whalen Neil "Frogurt" colspan="4" colspan="2" John Hawkes Lennon colspan="5" Fred Koehler Seamus colspan="5" Sheila Kelley Zoe colspan="5" Dylan Minnette David Shephard colspan="5" Hiroyuki Sanada Dogen colspan="5"

Main characters Characters are listed alphabetically. "Starring season(s)" refers to the season in which an actor or actress received star billing for playing a character. "Recurring season(s)" identifies a season in which an actor or actress appeared, but received guest star or special guest star billing.