| Guam Highway 3 | ||||
|---|---|---|---|---|
| Route information | ||||
| Maintained by Guam Department of Public Works | ||||
| Major junctions | ||||
| South end: |  GH-1 in Tamuning | |||
|  GH-28 in Gugagon | ||||
| North end: |   GH-3A / GH-9 in Dededo | |||
| Highway system | ||||
| 
 | ||||
| Guam Highway 3A | |
|---|---|
| Location: | Tamuning–Dededo | 
Guam Highway 3 (GH-3) is one of the primary automobile highways in the United States territory of Guam.
It runs in a south to north direction, from a junction with GH-1 near the Micronesia Mall in the southern community of Tamuning in a general northeasterly direction to the community of Dededo, where it meets GH-3A and GH-9. In between, it passes the United States Naval Communications Station Finegayan and the Federal Aviation Administration headquarters on the island.
Guam Highway 3A (GH-3A) connects GH-3 and GH-9 to Ritidan Point at the northern tip of the island of Guam in Dededo.