| Castillo Douglas | |
| Alternate Names: | Castillo Ortega Douglas Castle |
| Building Type: | House |
| Address: | Vázquez del Mercado |
| Location City: | Aguascalientes |
| Location Country: | Mexico |
| Namesake: | John Douglas |
| Destruction Date: | --> |
| Client: | Edmundo Ortega Douglas |
| Architect: | Federico Mariscal |
| Main Contractor: | J. Refugio Reyes Rivas |
| Unit Count: | --> |
Castillo Ortega-Douglas (English: '''Ortega-Douglas Castle'''), also known as Castillo Douglas, is a castle-like house in central Aguascalientes, Aguascalientes, Mexico. Designed by and supervised by J. Refugio Reyes Rivas, it was built for Edmundo Ortega Douglas, whose maternal grandfather, John Douglas (1849–1918), had emigrated to Mexico from Scotland.[1] The house is notable for having the features of a medieval castle, including a moat, a drawbridge, battlements, turrets, and a stained glass window.