West Kowloon Highway is a section of Route 3 in Hong Kong, built as part of the Airport Core Programme.

This dual-three-lane expressway runs for 4.2 km (2.6 mi), connecting Western Harbour Crossing in the south with Tsing Kwai Highway in the north.

While the southern section of the road is at grade, the northern part is on a viaduct in order to accommodate the MTR Tung Chung line and the Airport Express.

It was built entirely on the West Kowloon Reclamation, an area of artificial land reclaimed from Victoria Harbour, also under the Airport Core Programme.

The southern section (between Tai Kok Tsui and the Western Harbour Crossing toll plaza) was constructed by Aoki Corporation.