Kusaka (written: 日下, 草鹿 or 草下) is a Japanese surname. Notable people with the surname include:
(born 1978), Japanese voice actress , Japanese manga artist (1888–1972), Imperial Japanese Navy admiral Maryanne Kusaka (born 1935), American politician (1893–1971), Imperial Japanese Navy admiral , Japanese actor (born 1931), Japanese actor and voice actor (1924–1991), Japanese science journalist
See also , train station in Hidaka, Takaoka District, Kōchi Prefecture, Japan 7421 Kusaka, main-belt asteroid, named after Hideaki Kusaka