Baiardo is a surname. Notable people with the surname include:
Davide Baiardo (1887–1977), Italian swimmer Giovanni Battista Baiardo (died 1657), Italian painter Mercurio Baiardo (fl. 1500s), Italian painter
See also Bajardo, a village in the Italian region Liguria, also spelled Baiardo Bayard (legend), a magic bay horse in the legends derived from the chansons de geste, known in the Italian versions as Baiardo Bayard (disambiguation)