Hiroya Ino (井野 碩哉, Ino Hiroya, December 12, 1891 – May 19, 1980), was a Japanese politician who served one term as a member of the Lower House of the National Diet during World War II, and three terms as a member of the House of Councillors in the postwar period.

He was hired as a bureaucrat in the Ministry of Agriculture and Commerce, eventually rising to become director of the Sericulture Bureau and later Vice Minister in charge of irrigation.

When the IRAA collapsed in March 1945, Ino became chairman of Nobusuke Kishi's splinter faction, called the National Defense Brotherhood (Gokoku Dōshikai), which aimed to prolong the war.

After the surrender of Japan, as with all other former government ministers, Ino was purged from public office and arrested by the Supreme Commander of the Allied Powers to stand trial for Class-A war crimes.

He shared a cell in Sugamo Prison with Okinori Kaya, but his case never came to trial and he was eventually depurged.