Viscount Hamao Arata (濱尾 新, 12 May 1849 – 25 September 1925) was a Japanese politician and educator of the Meiji period, originally hailing from Toyooka, Hyōgo.

He was active in the Monbu-shō (present Monka-shō) and as the president of institutions such as Tokyo Imperial University.

[1] Hamao was also, very briefly, Lord Keeper of the Privy Seal of Japan.

He was ennobled as a baron on 23 September 1907 and advanced to viscount on 25 November 1921.

This Japanese history–related article is a stub.