Emily Harriet Pelloe (3 May 1878 – 15 April 1941) was a botanical illustrator, and author of books, of the flowering plants of Western Australia.
Her work in watercolour, extensive illustrations, and English language descriptions were included in a number of publications on the flora of the State.
Emily Sims was born in St Kilda, later moving to Perth, Western Australia where she married a banker, Theodore Parker Pelloe, in 1902.
She collaborated with the state botanist, C. A. Gardner, in producing her books, and was included in Hal Colebatch's A Story of a Hundred Years: Western Australia, 1829–1929.
These shorter publications were for the promotion and celebration of the states flora, and similar works continued to be produced as supplements in the West Australian newspaper for many years.