Sidney Sardus Warner (April 17, 1829 – July 6, 1908)[1] was a Republican politician in the state of Ohio and was Ohio State Treasurer from 1866 to 1871.

S S Warner was born April 17, 1829, at Suffield, Connecticut, moved with his family to Mantua Portage County, Ohio, in 1832, and Lorain County, Ohio, in 1839.

[2] He was elected to the Ohio House of Representatives in 1861 and 1863 to the 55th and 56th General Assemblies.

He later was a candidate for nomination for governor and representative to Congress, and a banker and manufacturer in Wellington, Ohio.

[5] In 1851 Warner married Margaret A. Bradner of Lorain County.