Byford is a suburb on the south-eastern edge of Perth, Western Australia, within the Shire of Serpentine-Jarrahdale. The town has its origins in a township that was gazetted under the name "Beenup" in 1906. In 1920, the name of the township was changed to Byford.

Armadale is a suburb of Perth within the City of Armadale, located on the south-eastern edge of the Perth metropolitan region. The major junction of the South Western and Albany Highways, which connect Perth with the South West and Great Southern regions of Western Australia respectively, is located within the suburb. It is also the terminus of the Armadale railway line, one of five major railway lines to service Perth.