Helen Jean (Brown) Bromley (born 9 August 1903, Beaumont, died 16 June 1982 Stamford) was an American botanist and phycologist noted for her study of the algal family Vaucheriaceae.
She earned her PhD from Ohio State University, in 1929.
She published using her maiden name, and served as both an instructor of botany and registrar at the University of Connecticut.
She was married to entomologist Stanley Willard Bromley.
The standard author abbreviation H.J.Br.
is used to indicate this person as the author when citing a botanical name.