Giardi is a surname. Notable people with the surname include:

Gianfranco Giardi (born 1949), Sammarinese sports shooter Mattia Giardi (born 1991), Sammarinese footballer Osvalda Giardi (1932–2019), Italian high jumper and pentathlete Phil and Kendra Giardi, characters in Glee

See also Girardi (disambiguation)