Januarius Kyunosuke Hayasaka (1883-1959)[1] was a bishop of the Catholic Church of Showa from Meiji.

His baptismal name was "Yanuario".

Hayasaka was the first Japanese-ethnicity bishop.

He served as the archbishop of Nagasaki between 1927 and 1937.

[1][2] His brother Kyube Hayasaka also served as bishop of the Diocese Daegu in Korea.