Cairdbeign is a rural locality in the Central Highlands Region, Queensland, Australia. In the , Cairdbeign had a population of 70 people.
The Dawson Highway enters the locality from the north-east (Orion) and exists to the north-west (Springsure).
There are a number of mountains in the locality:
Cardbeign Provisional School opened circa 1894. On 1 January 1909, it became Cardbeign State School. It closed and re-opened a number of times due to fluctuating student numbers. It closed permanently circa 1931. Note that the spelling is slightly different to the locality name. It was on Dalmally Road ().
In the , Cairdbeign had a population of 85 people.
In the , Cairdbeign had a population of 70 people.
Cairdbeign has a number of heritage-listed sites, including:
There are no schools in Cairdbeign. The nearest government schools are Springsure State School (Prep to Year 10) in neighbouring Springsure to the north-west and Orion State School (Prep - Year 6) in neighbouring Orion to the east.
There are no schools providing secondary education to Year 12 nearby. The options are distance education and boarding school.