Isla Stuart Blomfield (9 July 1865 – 16 August 1959) was an Australian nurse, sanitary inspector, and health visitor.

She spent her career helping to reduce the high infant mortality in New South Wales, advising mothers about breastfeeding.

[2][1] In 1909, she took a train through Siberia, and continued to London where she was a fraternal delegate[1] of the ATNA at the third congress of the International Council of Nurses in July in Westminster.

[2] William George Armstrong claimed that the work with mothers had been the contributing factor to the later observed reduction in infant mortality.

[4] Blomfield died in her flat in 1959 in the Sydney suburb of Potts Point, where she had taken up sculpture, and was cremated with Christian Science forms.