Hypatos

' (; : , ) and the variant ' (; ) was a Byzantine court dignity, originally the Greek translation of Latin (the literal meaning of is 'the supreme one', which reflects the office, but not the etymology of ). The dignity arose from the honorary consulships awarded in the late Roman Empire, and survived until the early 12th century. It was often conferred upon the rulers of the south Italian principalities. In Italian documents the term was sometimes Latinised as or , and in Italian historiography one finds . The feminine form of the term was '' ().

The creation of ordinary consuls in Late Antiquity was irregular, and after their division in 395, the two halves of the Roman Empire tended to divide the two consulships between them; the office, which had become both purely honorary and quite expensive to hold, sometimes lay vacant for years. The emperors were often ordinary consuls, and after 541, with the exception of the emperor, who assumed the office on his accession, no ordinary consuls were appointed. From that point on, only honorary consulships were granted, and the title declined much in prestige. Throughout the 6th to 9th centuries there is ample sigillographic evidence of functionaries bearing the title, usually attached to mid-level administrative and fiscal posts. In the late 9th-century hierarchy, however, as related by the Kletorologion of Philotheos, it was one of the lower dignities intended for "bearded men" (i.e. non-eunuchs), ranking between the and the . Its badge of office (), whose award also conferred the dignity, was a diploma. In the Escorial Taktikon'', written , the appears to be a regular office instead of an honorary dignity, endowed with judicial duties according to Nicolas Oikonomides. In the 11th century, the title rose again in importance, apparently outranking the , but disappeared entirely by the mid-12th century.