In the main Marvel Universe (Earth-616):
* Peter Parker is alive. He's currently active as Spider-Man, though he has had some close calls with death.
* He has died before. In the "One More Day" storyline, Peter made a deal with Mephisto to save Aunt May's life, which resulted in the erasure of his marriage to Mary Jane and the knowledge of his identity as Spider-Man. However, this was all undone in the "Brand New Day" reboot.
In other universes:
* In the "Ultimate Spider-Man" universe (Earth-1610), Peter Parker died. He was killed by Green Goblin in a dramatic final confrontation.
* There have been other alternate timelines and stories where Peter Parker has died. This is a common theme in comics, as writers often explore what-if scenarios.
To be completely sure:
* It's best to specify which comic universe you're asking about.
* You can always check the official Marvel website or a comic book wiki for the most up-to-date information.
Let me know if you're interested in specific storylines where Peter Parker dies. I can give you more information!