Osinyago (or á»Âsinyago/Osiyago) was an Aláàfin of the Oyo Empire.
He was probably a brother to Aláàfin Ayibi and a grandson to Aláàfin Jayin. á»Âsinyago was noted to be a greedy king, who gained wealth through any means necessary.
According to legend á»Âsinyago's second born, princess á»Âmá»Âsún, was expected to be the heir to the throne. á»Âsinyago however adopted his cousin Woruale as his successor. During an argument Princess á»Âmá»Âsún killed Woruale, whose father swore avengence. His father then poisened á»Âmá»Âsún, Aláàfin á»Âsinyago, Baá¹£á»Ârun Apalàand various other nobles, including the Bashorun, who all died.