Nonnosus (Greek: Νόννοσος, romanized: Nónnosos) was an ambassador sent by the Byzantine emperor Justinian I to the ruler of Kinda in central Arabia and then to Aksumites and Himyarites in the year 530 CE.
[1] He wrote an account of that visit, now lost, that was read and summarized by Byzantine patriarch Photius in Codex 3 of his Bibliotheca.
According to Photius, the report emphasized the courage of Nonnosus in hazardous situations and contained information on the religion and language of the Arabs.
Nonnosus entered Ethiopia through the Red Sea port city of Adulis and journeyed overland to Axum.
According to Malalas, the Byzantine ambassador performed proskynesis and was warmly received by the king, who was mounted on a spectacular gilded platform atop four elephants yoked together.