Sir Herbert Mayo (3 June 1885 – 1 October 1972) was a prominent South Australian jurist.
[2] He served from 1924 to 1941 on the council of the Law Society of South Australia and its president in the years 1932–33, 1934–35 and 1939–41, and was for many years South Australian editor of the Australian Law Journal.
[1] He served from 1942 to 1966 as judge of the Supreme Court of South Australia, replacing (later Sir) Mellis Napier who had been appointed Chief Justice.
[3] Herbert Mayo married Clarice Gwendoline Thomson Melrose (27 March 1890 – 29 May 1957) on 17 May 1911.
Their children included: He married again, to the widow Gwen Alister Brookes, née McInnes (1908– ) on 3 June 1958.