The canton of Saint-Aignan is an administrative division of the Loir-et-Cher department, central France. Its borders were modified at the French canton reorganisation which came into effect in March 2015. Its seat is in Saint-Aignan.^[1]

It consists of the following communes:^[1]

47°16′N 1°22′E / 47.27°N 1.37°E / 47.27; 1.37