The 21st Infantry Division "Granatieri di Sardegna" (Italian: 21ª Divisione di fanteria "Granatieri di Sardegna") was an infantry division of the Royal Italian Army during World War II. The division's name translates as "Grenadiers of Sardinia", referring to the Kingdom of Sardinia ruled by the Italian Royal House of Savoy before the unification of Italy as Kingdom of Italy.