Here are the very first lines every spoken by the main Lost characters. It’s not in chronological order (ie. Sawyer’s line isn’t him as a child), but rather, the line that introduced the audience to the character. It’s listed here in the order that the lines aired.
Michael: Walt! Walt!
Jack: Hey you! Just give me a hand.
Claire: Help! Please help me!
Locke: Hey! Hey, hey, hey, get away from there!
Hurley: Oh, you got to be kidding me.
Boone: You sure?
Sayid: Hey you, what’s your name?
Charlie: Me? Charlie.
Shannon: As if I’m going to start eating chocolate.
Jin: You must not leave my sight. You must follow me wherever I go.
Walt: Is that Vincent?
Rose: Guess he really had to go.
Sawyer: Sure it’s monkeys. It’s Monkey Island.
Sun: I think I found your bag.
Danielle: Where is Alex?
Desmond: You alright, brother?
Ana Lucia: Tequila and tonic with a wedge of lemon.
Mr. Eko: What happened? Who are they?
Pierre: Welcome. I’m Dr. Marvin Candle.
Libby: I’m Libby.
Bernard: Um, excuse me. Hi. Back where you guys, uh, where you came from — is there a woman named Rose there?
"Henry Gale": Please, just cut me down. My name is Henry Gale. I’m from Minnesota.
Alex: Wake up.
Ben: Hello again.
Juliet: I burnt my hand…and my muffins.
Richard: Thank you for taking the time to let us make our pitch, Dr. Burke.
Faraday: Are you Jack?
Miles: Back up, handsome.
Charlotte: How many different languages are there?
Lapidus: Yeah, let me speak to your supervisor.
Keamy: What are you doing back?
Man in Black (in his real human form): Mind if I join you?