Constance of Aragon, Hungarian queen (b. 1179)
Constance of Aragon (1179 – 23 June 1222) was an Aragonese infanta who was by marriage firstly Queen of Hungary, and secondly Queen of Germany and Sicily and Holy Roman Empress. She was regent of Sicily from 1212–1220.

She was the second child and eldest daughter of the nine children of Alfonso II of Aragon and Sancha of Castile.