Guildford is a suburb of Perth, Western Australia, 12 km northeast of the city centre within the City of Swan. Guildford was founded in 1829 as one of the earliest settlements of the Swan River Colony. It is one of only three towns in the metropolitan area listed on the Register of the National Trust.

The City of Swan is a local government area of Western Australia. It is in the eastern metropolitan region of Perth and includes the Swan Valley and 42 suburbs. It is centred approximately 20 km north-east of the Perth central business district. The City covers an area of 1,042 km2 and had an estimated population of 155,653 in 2020.