Maria of Aragon, Queen of Castile
| Maria of Aragon | |
|---|---|
| Queen consort of Castile and León | |
| Tenure | c. 1420–18 February 1445 |
| Born | 24 February 1403 Crown of Castile |
| Died | 18 February 1445 (aged 41) Villacastín, Crown of Castile |
| Burial | Santa María de Guadalupe, Spain |
| Spouse | John II of Castile |
| Issue Detail | |
| House | Trastámara |
| Father | Ferdinand I of Aragon |
| Mother | Eleanor of Alburquerque |
Maria of Aragon (24 February 1403 – 18 February 1445) was the Queen of Castile as the first wife of King John II from their marriage in 1420 until her death in 1445. She was the daughter of Ferdinand I of Aragon and Eleanor of Alburquerque.