Susan Elizabeth Ferns (born 27 October 1960) is a British trade unionist.
In 1982, she began working for the Trades Union Congress (TUC) as a policy officer.
In 1993, she moved to work as a research officer at the Institution of Professionals Managers and Specialists.
This union merged into Prospect in 2001, and the following year, Ferns became its head of research.
[1][2] In 2013, Ferns became the Prospect's director of communications and research, and then in 2018 its senior deputy general secretary.