Teasdale is a surname. Notable people with the surname include:George Teasdale (1831–1907), English Mormon apostle and missionary Graham Teasdale, Australian football player Harvey Teasdale (1817–1904), English circus clown John D. Teasdale, British researcher in cognition and brain therapy Joseph P. Teasdale (1936–2014), American politician from Missouri Kat Teasdale (1964–2016), Canadian auto racing driver Keith Teasdale, English cricketer Lucille Teasdale-Corti (1929–1996), Canadian physician and aid worker Mike Teasdale, Scottish footballer Noel Teasdale, Australian football player Sara Teasdale (1884–1933), American poet Verree Teasdale (1903–1987), American radio and film actress Washington Teasdale (1830–1903), British engineer, photographer and inventor Wayne Teasdale (1945–2004), American Catholic monk, teacher, and activist William B. Teasdale (1856–1907), American lawyer, judge and politician