Yuya Niwa (丹羽 雄哉, Niwa Yūya, born April 20, 1944) is a former Japanese politician of the Liberal Democratic Party (LDP), who served as a member of the House of Representatives in the Diet (national legislature).

A native of Niihari District, Ibaraki and graduate of Keio University he was elected for the first time in 1979 after working as a writer for Yomiuri Shimbun.

Later, he served as the Minister of Health in 1992 and in 1999.

He was defeated by Democratic Party of Japan (DPJ)-backed candidate Hiroko Ōizumi (former Lieutenant Governor of Yamaguchi Prefecture) in the Japanese general election, 2009.

This article about a Japanese politician born in the 1940s is a stub.