Sir Arthur Blyth KCMG, CB (19 March 1823 – 7 December 1891)[1] was Premier of South Australia three times; 1864–65, 1871–72 and 1873–75.

Early in 1857 he was elected as one of the representatives of Gumeracha in the first house of assembly, and in August became commissioner of public works in the John Baker ministry which, however, was defeated on 1 September.

In October 1861 he became Treasurer of South Australia in the Waterhouse ministry which, however, was reconstructed nine days later, when Blyth dropped out.

He came back to the ministry, however, as Treasurer in February 1862, and was selected as one of the three representatives of South Australia at the intercolonial conference held in Melbourne in March and April 1863.

On 4 August 1864, Blyth, taking the positions of premier and commissioner of crown lands and immigration, formed his first ministry, but it was difficult to do useful work, much time being wasted in no-confidence motions.

It succeeded in doing something for immigration, and after a stern fight passed a free, secular, and compulsory education bill through the assembly.

[4] Arthur's younger brother, Neville Blyth, had a significant political career, being first elected to the House of Assembly for the seat of East Torrens in 1860.