Can Muslims eat tacos

Answer 1

if does not contain any Haram ingredient yes.

Typically, a meat taco will contain shredded beef, cheese, and assorted vegetables in a corn shell. If the beef comes from a cow that is properly slaughtered and the cheese is not made using pig organs or lard (as a small minority of odd cheeses use pig organs or lard in their preparation), the meat taco should be permissible.

As concerns fish tacos, there is rarely any issue.