Knowland is a surname. Notable people with the surname include:
George Arthur Knowland VC (1922–1945), English recipient of the Victoria Cross during the Second World War Joe Knowland (1930–2019), actor from Oakland, California Joseph Knowland (1833–1912), father of U.S. Representative Joseph Russell Knowland, grandfather of U.S. Senator William Fife Knowland Joseph R. Knowland (1873–1966), American politician and newspaper publisher Tony Knowland (1919–2006), professor of English literature William F. Knowland (1908–1974), United States politician, newspaperman, and Republican Party leader
See also Joseph Knowland State Arboretum and Park, park located in Oakland, California