What actor plays posieden?

There is no single definitive answer to who plays Poseidon, as he has been portrayed by many actors in different films, TV shows, and other media.

Here are some examples:

* In the *Percy Jackson* franchise: Kevin McKidd plays Poseidon in the films.

* In the *Clash of the Titans* (2010) remake: Liam Neeson plays Poseidon.

* In *Hercules* (1997): James Woods voices Poseidon.

To give you a more accurate answer, I need to know which specific work you're referring to.

Can you please tell me which film, TV show, or other media you are interested in?