TransBunbury is the public bus transportation system in Bunbury, Western Australia, consisting of 13 public routes as well as 30 school routes.

[2] Until 31 December 2014, the service was operated by South West Coach Lines.

Upon being re-tendered, it passed to Swan Transit, with a new 10-year contract commencing on 1 January 2015.

[7] As at September 2020, TransBunbury operates a fleet of 37 buses, consisting of a mixture of Volvo B7RLE, Mercedes Benz OC500LE and Mercedes-Benz O405NH buses, all of which are ex-Transperth.

[8] Upon being rebranded as TransBunbury in May 2011 the Bunbury City Transit white and blue livery was replaced by Transperth's silver and green livery.