I've eaten (delicious) pork in Jamaica. But Lydie at 3 Dives, for one, doesn't cook or serve it in his restaurant. He says some people won't eat his other food if pork is cooked in the same kitchen/grill.
Pork is of course not kosher, or halal, and many rastas avoid it also. It's an Old testament thing shared by all religions of "the book" and I suspect came from a practical matter of food safety back then.