Lily Isabel Maude Addison (1885–1968) was a female architect who practised in Queensland, Australia.

Lily Isabel Maude Addison was born on 12 March 1885 at St Kilda, Melbourne, Victoria.

[8] Lily and her sister, Edith May, were living at 1 George Street, Dulwich (from 1954 Marrickville), and their occupations were listed as home duties.

[18][19][20] Lily Addison's work in the office was predominantly based on the assistant role of her father in the year 1906 who established an architecture firm named G.H.M.

[21] Lily Addison studied Building Construction and History of Architecture at the Brisbane Central Technical College in 1914.

Lily Addison's contribution in the field of architecture remains unclear, her role as an assistant architect in her father's firm G.H.M never acclaimed the contribution she made and no designs have been attributed to her name and documented to this day due to the predominance of male contribution in the field.,[17][22] With Lily Addison being the first known woman to work in this field of Architecture, there was little work to be acclaimed to her name with gender inequality being a major influence in this.

[18][20] Lily's father George Henry Male Addison did however make significant contributions to architecture.

[23] However, Lily Addison, as a practicing woman architect, did contribute to the entry of women in architecture which followed.