Angwin is a Cornish language characteristical surname that means 'the white'. Notable people with the surname include:
Andy Angwin (1918–2002), Australian rules footballer H. T. M. Angwin (1888–1949), Australian engineer and public servant Helen Angwin (born c. 1931), Australian tennis player Julia Angwin, American journalist Laurence Angwin (born 1982), Australian rules footballer, grandson of Andy Maria Louisa Angwin (1849–1898), Canadian physician Ryan Angwin (born 2002), Australian rules footballer William Angwin (1863–1944), Australian politician William Angwin (footballer) (1891–1963), Australian rules footballer
See also Angwin, California Angwin–Parrett Field, public-use airport