Ordonho Alvares (ca. 1230 – 1285) was a Spanish Cardinal of the Papal Curia.
- Margarita Torres Sevilla and Peter A. Linehan, A misattributed tomb and its implications: cardinal Ordoño Álvarez and his friends and relations, Rivista di Storia della Chiesa in Italia, Anno LVII nº-1 (2003), pp. 53–63.
- Ordoño Álvarez, Ordonio Alurz, Ordonius, Ordhon, Oddon, Ordeone, Ordeano.
- From 1278
- The Spanish Church and the Papacy in the Thirteenth Century
- Chapter 12: The Spanish Church and the Papacy in the 13th Century