bayezid osman, also known as osman bayezid osmanoğlu with a surname as required by the turkish republic, or known by the ottoman imperial name as prince şehzade bayezid efendi (; 23 june 1924 – 6 january 2017), was the 44th head of the imperial house of osman, which ruled the ottoman empire from 1281 to 1922. the monarchy was abolished in 1922, with the modern republic of turkey replacing it.