Hirini Rawiri Taiwhanga (c. 1832 – 27 November 1890), known as Sydney Taiwhanga, was a 19th-century Māori member of the House of Representatives. Taiwhanga identified with the Ngāpuhi iwi. He was born in Kaikohe, Northland, New Zealand in about 1832; his father was Rawiri Taiwhanga. He unsuccessfully contested the Western Maori electorate in the 1884 election. Of eight candidates, he came last with 5.5% of the vote. In the Western Maori 1886 by-election, he came fourth out of five candidates. He represented the Northern Maori electorate from 1887 to 1890 when he died, aged about 55.