Sydney Ionoval Jones (23 May 1894 – 28 April 1982) was a New Zealand politician of the National Party.
Jones was born in 1894 at Makotoku, a locality some 68 miles (109 km) south of Napier in the Waipawa district.
Prior to finishing his tertiary education, he enrolled with the Samoan Expeditionary Force in 1914.
He completed his studies after the war and graduated from Victoria with an MA (Hons) in economics.
In Hastings, he was president of the Old Boys Football Club and the local Returned Services' Association (RSA).