Assateague may refer to:

• The Assateague people, a Native American tribe
• Assateague Island, an Atlantic barrier island in Maryland and Virginia
• Assateague Light, a lighthouse located on the southern end of Assateague Island
• Assateague Island National Seashore, a unit of the National Park Service occupying much of Assateague Island
• USCGC Assateague, an Island-class cutter of the United States Coast Guard