Iza Frances Josephine Coghlan MBBS ChM (10 October 1868 – 1 July 1946) was an Australian medical doctor.

Coghlan was born in Redfern, a suburb of Sydney, in 1868, to Irish immigrant parents.

[3] She enrolled at the University of Sydney in 1887 and was the sole woman in the year's intake of medical students.

[1][2] Coghlan established a private practice in Sydney in 1893 and began working as a life insurance medical assessor in 1894.

She was a co-founder and president of the NSW Medical Women's Society and worked with St John Ambulance Australia to give lectures on first aid and home nursing.