Hideki Niwa (丹羽 秀樹, Niwa Hideki, born 1972) is a Japanese politician of the Liberal Democratic Party (LDP), a member of the House of Representatives in the Diet (national legislature). A native of Kasugai, Aichi and graduate of Tamagawa University, he was elected for the first time in 2005 after an unsuccessful run in 2003. He was defeated in the 2009 election by DPJ candidate Yoshihiro Ishida but regained his seat in special elections in 2011.

Hideki Niwa
丹羽 秀樹
Member of the House of Representatives
In office 11 September 2005 – 21 July 2009
Preceded by	Yūkichi Maeda
Succeeded by	Yoshihiro Ishida
Constituency	Aichi-6th
Incumbent
Assumed office 24 April 2011
Preceded by	Yoshihiro Ishida
Constituency	Aichi-6th
Personal details
Born	(1972-12-20) 20 December 1972 (age 51) Kasugai, Aichi Prefecture, Japan
Political party	LDP
Alma mater	Tamagawa University
Website	2wa.jp//