Rajah of Bukidnon
Reign ? - 1525 A.D.
Died 1525
Place of death Kalasungay, Rajahnate of Bukidnon
Predecessor Rajah Malaw
Successor monarchy abolished
Religious beliefs Roman Catholic

Rajah Aluy, later baptized as Pedro Alúy (died circa. 1525), was the last Rajah or King of Bukidnon. He was the king of Bukidnon at the time of encounter with Spanish conquistadors. Not much is known about his background. However, he was recorded as being part of who today are referred to as the Manobo ethnicity of the Lumad ethnic group. During the presidency of Ferdinand Marcos, he was venerated as a National Hero of the Philippines for his participation of war against the Spanish Empire during the Great War in Mindanao and Sulu.

At the encounter with Spanish conquistadors, Rajah Aluy allowed himself and his family to be baptized as a Roman Catholic. He was given the name Pedro, and his kingdom was accepted to be a vassal state of the Spanish Empire, and he was incorporated into the Principalia de Mindanao or Principalia del Sur. The Spanish referred to his kingdom as the "Reino de Bukidnon", or the "Realm of Bukidnon". The Spanish gave him the title "Don Pedro de Bukidnon".

Eventually, Rajah Aluy relented on his actions. He forebad his daughters from being wed to Spanish colonists, and eventually ordered the slaying and killing of Spanish soldiers and officers in his realm. In 1522, his signed a pact with the rulers of five other kingdoms, namely the neighboring Rajahnate of Butuan, as well as the Moro Muslim states: the Sultanates of Sulu, Maguindanao, Lanao and Buluan to fight the Spanish conquerors together in what is known a the "Great Alliance of Six".

Angered, the Spanish Viceroyalty sent soldiers and more forces to Mindanao to battle the Alliance, with Bukidnon and Butuan receiving the front-ends and brunt of the attacks as the Spanish attacked from Visayas up north. Aluy led a fierce resistance of Manobo warriors, armed with swords against the Spanish conquistadors. After three years of successful resistance, he was killed in the Battle of Kalasungay. After his death, the Spanish conquerors vanquished the rest of the resistance, capturing his two sons, and wedding them to Spanish princesses. They also captured his daughter and wife as fugitives and captives.

News of his death angered the Moro sultans, who sent armies and swarms of attacks against the invading Spanish forces. According to Manobo and Moro folklore, a Muslim datu by the name of Pajung rescued the fallen rajah's wife and daughter, after successfully raiding a Spanish ship.