Sir Roger Fray Greenwood Ormrod, PC (20 October 1911 – 6 January 1992) was a British Lord Justice of Appeal.
After serving in the Royal Army Medical Corps during the Second World War, he returned to legal practice, specialising in divorce cases and becoming Queen's Counsel in 1958.
In 1961 he was appointed a judge of the Probate, Divorce and Admiralty Division, and in 1974 a Lord Justice of Appeal.
Ormrod held that, for the purpose of marriage, sex was to be legally defined by three factors that he called 'biological' – namely chromosomal, gonadal and genital.
[1]On the basis of the medical evidence, Ormrod held that the wife was not a woman for the purposes of marriage but a biological male, and had been so since birth.