Emily Jane Pfeiffer (26 November 1827 – 23 January 1890, née Davis) was a Welsh poet and philanthropist. She supported women's suffrage and higher education for women, as well as producing feminist poems. Pfeiffer was born Montgomeryshire, but spent much of her early life in Oxfordshire. She was the granddaughter of a banker, but her grandfather's bank collapsed in 1831. Her family could not afford a school education for her. She published her first poetry book in 1842. In 1850, she married a tea merchant. As a poet, she was particularly known for her sonnets.