Esna Boyd Robertson (née Boyd; 21 September 1899 – 13 November 1966) was an Australian tennis player who reached seven consecutive women's singles finals at the Australian Championships from 1922 through 1928.

She won one of those finals, defeating Sylvia Lance Harper in 1927.

[1] Boyd was born in Melbourne on 21 September 1899, the daughter of James Boyd, a politician, and Emma Flora McCormack.

[2] She married Angus Robertson on 11 March 1929; they had a son, William, in 1930 and a daughter Mary, in 1933.

The World Hard Court Championships (WHCC), actually played on clay in Paris or Brussels, began in 1912 and were open to all nationalities.