In some countries, yes. But generally speaking, we have our own currencies (pesos, soles, reales, colones, etc) and maybe sometimes use dollars for mortgages because it's advantageous in some ways. Of course though, our currencies basically depend on the dollar completely, and our economies rise or fall when the price of the dollar does.don’t most latin american countries use USDs de facto since they have insane inflation?
There are countries that get a lot of American tourists so some businesses do accept dollars, but they convert them into the local currency.