Can poltergeist hurt you

The movie? no well...unless someone threw it at you.

However I assume you mean a poltergeist and no they cant. In the same sense that a pixie can't hurt you. There is no peer review evidence that ghosts exist in any form and as a rule something that does not exist cannot hurt you.

However since your asking this question I can safely assume you believe ghosts exist, in which case, if ghosts do in fact exist, there has yet to be a documented case of one ever injuring a human.

This means one of three things

1. Ghosts do not exist.

2. Ghosts exist but cannot harm you.

3. Ghosts exist and can harm you but never do.