Does master chief die in Halo 3

NO! At the end of the game wait until the credits are over and you will see a movie and master chief is still alive. He is stuck with Cortana where Installation 00 or the Halo in that game blew up, and he goes into a cryo-tube, which is something that you go into that makes you fall into hibernation and you can't die. This could be the start to a future game in the Halo Series. Ya, i luved dat wen dat happened yay!!!
No he did not,he actually survived but he's up in a escape ship lost in space.