Count Augustin Ehrensvärd (28 June 1887 – 10 May 1968) was a Swedish nobleman and civil servant.
Ehrensvärd was born in Karlskrona, Sweden, the son of admiral, count Carl August Ehrensvärd (1858–1944) and his wife baroness Lovisa Ulrika "Ulla" (née Thott).
[3] Ehrensvärd was assistant in the Ministry of Ecclesiastical Affairs in 1914 and in the Universitetskanslersexpeditionen from 1916 to 1917.
He was a member of the Executive Committee of the National League of Sweden from 1927 to 1931 and he was acting deputy director (kansliråd) in 1929 and deputy director in the Royal Majesty's Chancery (Kunglig Majestäts kansli) in 1936.
[4] On 21 May 1929 in Turku, he married countess Margaretha Lavinia Magdalena Armfeldt (30 May 1899 – 13 December 1981), the daughter of the Finnish managing director, count August Magnus C:son Armfeldt and his wife Aina Constance Favorin.