Markwell is a surname. Notable people with the surname include:
Diego Markwell (born 1980), Dutch baseball player Don Markwell, talk radio personality in Montgomery, Alabama Donald Markwell (born 1959), Australian social scientist and college president Kathleen Markwell (1896-1973), pianist, wife of Hiawatha Coleridge-Taylor Terry Markwell an American born actress, born in Phoenix, Arizona
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