Alexander Mayes (1859–1941) was a builder and politician in Toowoomba, Queensland, Australia.

Alexander Mayes was born on 17 July 1859 in Largo, Fifeshire, Scotland.

Circa 1901, he built his own home Largo (now the heritage-listed Gowrie House) based on a design by Toowoomba architect, Harry Marks.

[2] Mayes left Toowoomba in 1922 for Bilinga near Coolangatta and returned to Scotland in 1926.

[2] His wife Nellie died on 25 April 1948 and her cremated remains are interred with her husband's in the crematorium grounds.