Lady Bonython may refer to: 1898–1924: Mary Louisa Fredericka Balthasar (?–1924) ( Marie Louise Friedrike and Marie Louise Frederica), wife of Sir John Langdon Bonython 1935–1977: Constance Jean Warren (1891–1977), wife of Sir John Lavington Bonython
See also Although not titled "Lady Bonython", female Bonythons with knighted husbands included: 1936–?: Mary Elsie Bonython (1874–?), wife of Sir (Herbert) Angas Parsons 1966–2008:Elizabeth (Betty) Hornabrook Bonython CBE (1907–2008), wife of Sir Keith Wilson