Baum is a German surname meaning "tree" (not to be confused with the French surname Baume). Notable people with this surname include:
Bernie Baum, American song writerCarol Baum, American film producerEdgar Schofield Baum (1916–2006), American artistFrank Baum (footballer) (born 1956), German footballerFrank Joslyn Baum (1883–1958), American lawyer, soldier, writer and film producerHenry Baum (1972-), American writerFriedrich Baum (1727–1777), colonel in British service during the American revolutionary warL. Frank Baum (1856–1919), American author (The Wonderful Wizard of Oz), actor, and independent filmmakerMichael Baum, a leading British surgical oncologist who specialises in breast cancer treatmentOskar Baum (1883–1941), Czech music educator and writerPaul Baum (artist) (1859-1932), German landscape painterPaul Baum (mathematician) (born 1936), American mathematicianRoger S. Baum (born 1938), American banker, now children's authorTom Baum (born 1940), American screenwriter and playwrightVicki Baum (1888–1960), Austrian writerWalter Baum (1921-2007), German type designerWalter Emerson Baum (1884–1956), Pennsylvania impressionist painterWilhelm Baum, (born 1948), Austrian historian, publisherWilhelm Baum (surgeon) (1799–1883), German surgeonWilliam Wakefield Baum (1926–2015), American Roman Catholic cardinalJames Baum "The Wizard"(1982-Present), Magic Wash Car Wash