The township of Alpha is located in central western Queensland, Australia. The Capricorn Highway passes through the town, which lies on Alpha Creek. Alpha is the administrative centre of the Jericho Shire .
Alpha was initially established as a temporary terminus during construction of the Great Northern Railway. The railway, which was being built westwards from Rockhampton, was opened to Alpha on September 22, 1884. The construction camp continued moving west, but a township remained at the former terminus. Until the late 1990's, Queensland Rail maintained a locomotive depot in the town.
The town remains a service centre for the surrounding pastoral properties and travellers on the highway.