Dominican Republic is located in the Caribbean and uses the same adapter plug as many Caribbean islands and the United States and Canada. Not all countries in the Caribbean require that their wall outlets be polarized (one pin larger than the other), therefore sometimes an adaptor plug is still necessary.

Whether you need an adapter in Punta Cana depends on where you are traveling from. The Dominican Republic uses Type A and Type B sockets (the same two-prong and three-prong plugs found in the U.S. and Canada) with a standard voltage of 110V/60Hz. If you are visiting from North America, your devices will fit and function perfectly without any extra hardware. However, travelers from Europe, the UK, or Asia will definitely need a plug adapter to fit the flat-pin sockets. Furthermore, because European and Asian countries typically use 230V, you must check if your electronics are "Dual Voltage" (usually marked as 100-240V). If they are not, you will also need a voltage converter to prevent your devices from frying, as the lower 110V power can damage motorized items or high-wattage hair tools that aren't designed for it.