Lord Augustus William Frederick Spencer Loftus, GCB, PC (4 October 1817 – 7 March 1904), was a British diplomat and colonial administrator.

He was Ambassador to Prussia from 1865 to 1868, to the North German Confederation from 1868 to 1871 and to the Russian Empire from 1871 to 1879 and Governor of New South Wales from 1879 to 1885.

[1] Loftus was appointed by Lord Palmerston to the diplomatic service in 1837 as attaché at Berlin.

[3] He was appointed a Knight Grand Cross of the Order of the Bath in 1866[4] and sworn of the Privy Council in 1868.

Loftus survived her by two years and died in Surrey, England, in March 1904, aged 86.