The Hundred of Blyth is a cadastral unit of hundred on the northern Adelaide Plains of South Australia centred on the township of Blyth. It is one of the 16 hundreds of the County of Stanley. It was named in 1860 by Governor Richard MacDonnell after Arthur Blyth who arrived in South Australia as a teenager in 1839 and went on to become a local businessman, parliamentarian and thrice the premier of South Australia. Apart from the town of Blyth the locality of Kybunga is also in the hundred, and the historic settlement of is on the eastern boundary of the hundred.