The Iron Triangle Limited was a passenger train operated by Australian National between Adelaide, Port Pirie, Port Augusta, and Whyalla.

[1] The Iron Triangle Limited first operated on 21 April 1986.

It ceased operating on 31 December 1990 when all regional passenger services were withdrawn in South Australia.

[1] The train was formed of CB class railcars.

[1] It was operated on occasions by Bluebird railcars.