Gulf Developmental Road is an Australian highway linking the Cairns and Normanton regions in northern Queensland, Australia.

In the east, the Gulf Developmental Road begins at an unnamed junction on the southern edge of Forty Mile Scrub National Park, 241 km (150 mi) south-west of Cairns.

This road has only one major intersection, with the Gregory Highway in the locality of Mount Surprise.

A lead project to upgrade the Cairns to Northern Territory border corridor, including the Gulf Developmental Road and surrounding state and council roads, at an estimated cost of $62.5 million, was commenced in 2020, with planning continuing.

[3] A project for pavement strengthening and widening of sections of the Gulf Developmental Road between Mount Garnet and Croydon at a cost of $21.5 million was planned to be completed by mid-2022.