Bowlby is a surname. Notable people with the surname include:
April Bowlby (born 1980), American actor
Thomas William Bowlby (1818–1860), correspondent to The Times
Anthony Alfred Bowlby (1855–1929), British surgeon and pathologist, son of the above
Henry Thomas Bowlby (1864–1940), Headmaster of Lancing College in the 1920s
Henry Bowlby (1823–1894), Bishop Suffragan of Coventry 1891-1894
John Bowlby (1907–1990), British developmental psychologist, son of the abovementioned Anthony Alfred Bowlby