Mike Tyson -- Pacquiao Should Be 'F**king Barred' ... 'Totally Disrespectful'

Mike Tyson has a strong message for Manny Pacquiao -- YOU "SHOULD BE F**KING BARRED FROM THE GROVE!!!"

Tyson blasted Pacquiao at LAX friday ... telling TMZ Sports the comments Manny made about gay people was "totally disrespectful of other people's feelings."

As we previously reported, Manny said gay people were worse than animals and later quoted a bible verse that suggested gay people should be put to death.

Tyson explained that a lot of people share Manny's religious views about homosexuality -- but you have to RESPECT the feelings of other people ... and Manny didn't do that.

BTW, we also asked Tyson if he had any advice for Jon Jones -- and he weighed in on that too.

Check out the clip.