Semiahmoo Resort is a golfing resort and spa overlooking Semiahmoo Bay, opposite Blaine, Washington, northwest of Bellingham in the northwestern coast of the United States. Set within 1,100 acres (450 ha), it lies on a long sandy spit in the northern part of Puget Sound near the Canada–US border. The name of the resort is from the Semiahmoo indigenous people in whose Salish language it is the word for "half moon" and describes the crescent shaped land the resort was built on.