Chikage Oogi (? ??, Ogi Chikage), real name Hiroko Hayashi (? ??, Hayashi Hiroko) (born 10 May 1933 as Hiroko Kimura (?? ??, Kimura Hiroko)), is a Japanese actress and politician.
During her 30-year-long political career, she served in some important posts.
She became the first female President of the House of Councillors in 2004.
Her pseudonymous surname is also spelled Ogi, Ogi and Ohgi for a variety of Hepburn romanization systems.