Western Star heavy-duty truck illuminated after dark at the show in Wildwood Florida

Western Star is an American truck manufacturer headquartered in Portland, Oregon. It is owned by Daimler Truck North America, which is a subsidiary of German automotive manufacturer Daimler Truck AG. Western Star trucks are commonly sold at Freightliner dealerships and is generally marketed as a more premium compared to Freightliner.

In 1967 White Motor Corporation started the Western Star division as White Western Star with a new plant at Kelowna, British Columbia, sharing headquarters with White in Cleveland, Ohio.

In 2002, Western Star production was moved to a plant in Portland, Oregon. In May 2015, the Daimler Truck North America plant in Cleveland, North Carolina, began to build 4700 and 4900 models, as well as assemble all new semi tractor 5700XE models.