#4 - Charlie Pace, "Through the Looking Glass"
Charlie's death wouldn't have been as shocking if we hadn't thought he'd cheated it for the last time. Desmond had been predicting his death throughout the third season, and it seemed like an inevitability until Charlie surfaced under the Looking Glass and cackled with glee, realizing that he'd survived what he had believed was a fatal task. We believed (or really, really wanted to believe) it too. Everything was looking pretty gleeful as Desmond and Charlie later stood over the bodies of the three Others who had tried to kill them. That is, until one of the Others turned out not to be dead, and blew up a porthole which flooded a room in the underwater station, causing Charlie to drown.
Of course, Charlie could have escaped, but at that point, he realized that death was pretty inevitable for him and shut the door, locking himself in and leaving Desmond to watch in horror as Charlie scrawled his last words onto his hand -- "NOT PENNY'S BOAT." It was one of the most heroic deaths (if not the most heroic death) on the show, and the only one that has ever made me cry. Maybe I'm just hardhearted.
#3 - John Locke, "The Life and Death of Jeremy Bentham"
Now, we knew that Locke was going to die. We had known that ever since "There's No Place Like Home, Part 3," when we peeked into the coffin and saw his shiny bald dome on the undertaker's pillow. But we'd always assumed that he'd find some way to come alive. Especially when we saw the opening moments of "The Life and Death of Jeremy Bentham," things were looking pretty good for the apparently resurrected John Locke.
Not so fast, sportsfans. The final flashback of the episode was some of the most brutal stuff ever, involving Ben strangling Locke with electrical cords and making it look like a suicide. That was some of the most shocking imagery the show has ever put on the air, and it was still awful even though we thought that Locke would come back to life on the Island. When, in the season five finale, we found out that he actually didn't, but was replaced by a doppelganger, his death felt even more real, and even more horrific. It's still the must brutal death of the series, and it befell our very own Man of Faith.
#2 - Jin Kwon, Sun Kwon, and Sayid Jarrah, "The Candidate"
You didn't really think I'd leave this one off the list, did you? The most recent episode of LOST spelled the end for not one but three original cast members who crashed on the Island in season one. Jin, Sun, and Sayid met their ends in the single bloodiest episode of the series. And it's all the Man in Black's fault. The shifty baddie planted a bomb on board the submarine in an attempt to kill all the candidates -- and he was partially successful. Sayid, on the upward arc of a downfall/redemption storyline, sacrificed himself to spirit the bomb away to a few doors down on the sub. He was incinerated so immensely that Jack would later declare that there was "no more Sayid."
But Sayid, despite his heroic sacrifice, wasn't entirely successful. As you well know, the submarine began to flood from the big hole that he just been breached in its hull, and time was running out for the survivors, who were still hundreds of feet below sea level. Things weren't helped by the fact that Sun was pinned by some debris. Despite Jin, Sawyer, and Jack's best efforts to help her out, she remained stuck -- forcing Jack and Sawyer to leave to survive and leaving Jin with that one sad choice - to remain with the wife whom he'd only just been reunited with. As the waters rose, they two declared their love for each other, their hands only separating in their sad, sad death.
#1 - Ana Lucia Cortez and Libby Smith, "Two for the Road" and "?"
When you say 'shocking LOST deaths,' you'd be out of your mind not to remember the most shocking death in the show's history: Michael's cold-blooded murders of both Ana Lucia and Libby. He had a goal, that's for sure - to free Benjamin Linus (then known as Henry Gale) in order to reclaim his kidnapped son, Walt. And he shot them both, one premeditatively and one not so much. Both characters died. While Ana Lucia would go on to fly through Pandora, it was Libby's death that the audience really felt, through Hurley, who had been hoping to pursue a relationship with her. His grief overwhelmed the rest of the season, and was revisited in episodes like "Tricia Tanaka is Dead" and more recently, "Everybody Loves Hugo." In fact, the most recent episode reunited Hurley and Libby for a romance in the flash-sideways timeline, though the on-Island Hurley remains alone, still grieving for his lost love.

I was kind of surprised to see that Boone's death didn't make it into the list. Well I guess it's not really shocking, but it was definitely one of the most memorable and heartbreaking one. After Sun and Jin's probably. I'm still healing my broken heart.The deaths of my two favorite characters, Daniel and Charlie are the saddest thing to happen on Lost. Reading this article makes me miss all these people (not so much Ana Lucia, no). It's great to be able to see most of them again in the flash sideways this season.
Boone's death almost made the list. It was seriously like #9.
No way! I can't believe you didn't include Alex getting shot in the head! That should both be on the list and be at number one. Did anyone really think Keamy was that hard-hearted? And on top of that, she was a freaking kid. Shot in the head, no less. I've never seen anything remotely approaching the shock value of a grown man shooting an innocent teenage girl in the head execution style in cold blood right in front of her father. That really needs to be on this list.
[...] LOST's Top 8 Most Shocking Deaths « TVOvermind [...]
What about Juliet?! Surely she deserves a place over Shannon!!!!! If only because it so completely wrecked Sawyer and set up what just happened in the sub that wiped out 3 orginal cast members…..
Juliet? For me it was the most shocking death.
What? What about Juliet? And if not her, why Ana Lucia and Libby's death are more shocking than Jin and Sun? No way…