| Cortes of Castile and León | |
| Native Name: | Cortes de Castilla y León |
| Legislature: | Castile and León unicameral legislature |
| Coa Pic: | Escudo de Castilla y León - Versión heráldica oficial.svg |
| Coa Res: | 70px |
| Session Room: | Hemiciclo de las Cortes de Castilla y León.jpg |
| House Type: | Spanish regional legislature |
| Houses: | Unicameral |
| Leader1 Type: | President |
| Leader1: | Carlos Pollán |
| Party1: | Vox |
| Election1: | 10 March 2022 |
| Leader2 Type: | Vice President |
| Leader2: | Francisco Vázquez |
| Party2: | PP |
| Election2: | 21 June 2019 |
| Leader3 Type: | Second Vice President |
| Leader3: | Ana Sánchez |
| Party3: | PSOE |
| Election3: | 21 June 2019 |
| Leader4 Type: | Secretary |
| Leader4: | Diego Moreno |
| Party4: | PSOE |
| Election4: | 10 March 2022 |
| Leader5 Type: | Second Secretary |
| Leader5: | Rosa Esteban |
| Party5: | PP |
| Election5: | 10 March 2022 |
| Leader6 Type: | Third Secretary |
| Leader6: | Fátima Pinacho |
| Party6: | Vox |
| Election6: | 10 March 2022 |
| Term Length: | 4 years |
| Seats: | 81 |
| Structure1: | File:Cortes de Castilla y León - XI legislatura.svg |
| Structure1 Res: | 300px |
| Structure1 Alt: | Composition of the Cortes of Castile and León |
| Last Election1: | 13 February 2022 |
| Political Groups1: | Government (31)
Opposition (50) |
| Meeting Place: | Seat of the Cortes of Castile and León Valladolid, Castile and León |
| Website: | Cortes de Castilla y León |
The Cortes of Castile and León (Spanish: Cortes de Castilla y León) is the elected unicameral legislature of the Autonomous Community of Castile and León.
The tradition of the regional Cortes is traced back to the Royal Council (Latin: Curia Regis) of León (1188). The Curia Regis was a king's summons of the estates of the realm. Although the practical outcome of the Curia Regis of 1188 is still disputed, its charter seems to be an early move towards the rule of constitutional law, much like Magna Carta. The Cortes of Castile and León is seated in the city of Valladolid.