ESPN to Hank Williams -- You're Fired.

The Monday Night party is over for Hank Williams ... ESPN has just fired the singer, days after he compared President Obama to Hitler.

ESPN had already pulled the song from Monday's game while they mulled Williams' fate -- but now, it's permanent.

ESPN released a statement, saying, "We appreciate his contributions over the past years. The success of Monday Night Football has always been about the games and that will continue."

As we previously reported, Williams went on Fox News earlier this week, and referred to Obama and Joe Biden as "the enemy."

He later called his comments "dumb" -- but never really apologized for saying them.