Kuusik is an Estonian surname (meaning "spruce forest"), and may refer to:
Edgar-Johan Kuusik (1888–1974), architect Harleth Kuusik (b. 1996), fashion model Mart Kuusik (1877–1965), rower Oliver Kuusik (born 1980), operatic tenor Tiit Kuusik (1911–1990), operatic baritone Timotheus Kuusik (1863–1940), teacher, translator, writer and politician
See also Kuusk Kuusiku (disambiguation)