Newport Bay is an arm of Chincoteague Bay between the mainland of Worcester County, Maryland and Sinepuxent Neck; its principal tributaries are Newport Creek and Trappe Creek.

Newport Bay
Newport Bay Show map of Maryland Newport Bay Show map of the United States
Location	Worcester County, Maryland[1]
Coordinates	38°13′56″N 75°13′5″W / 38.23222°N 75.21806°W / 38.23222; -75.21806
Type	Bay[1]
Surface elevation	0 feet (0 m)[1]

The names Newport Bay and Newport Creek refer to a tract of land on the creek, "Newport Pagnell", patented in the late 17th century, which in turn commemorated the town of the same name in Buckinghamshire. Newport Bay has also been known as Mobjack Bay.^[1]