Guiscard is a given name and a surname. Notable people with the name include: Antoine de Guiscard (1658–1711), French refugee, spy and double Robert Guiscard (c. 1015 – 1085), Norman adventurer Roger Guiscard (1031–1101), Norman nobleman who became the first Count of Sicily from 1071 to 1101
See also
Guiscardo Giscard d'Estaing (surname)