Tamuning (also known as Tamuning-Tumon-Harmon) is a municipality or "village" located on the western shore of the island of Guam. The village of Tamuning can be viewed as the economic center of Guam, containing Tumon (the center of Guam's tourist industry), Harmon Industrial Park, and commercial districts in other parts of the municipality. Its central location along Marine Corps Drive (the island's main thoroughfare) has aided in its development.

Tamuning is the site of the passenger terminal of Antonio B. Won Pat International Airport, which serves the entire island. Fort Juan Muña, in Harmon, is a facility for the Guam Army National Guard.

Guam's only civilian and government operated hospital, the Guam Memorial Hospital, is in Tamuning.