Mohamed Nasser Kotby (Arabic: د/محمد ناصر قطبي; born 1 December 1937), is an Egyptian professor emeritus of otorhinolarygology and phoniatrics at Faculty of Medicine, Ain Sham University.

He was elected as president of Collegium Medicorum Theatri [CoMeT],[5] Pan African Federation of Oto-Rhino-Laryngological Societies [PAFOS], Collegium Oto-Rhino-Laryngologicum Amicitiae Sacrum [CORLAS], International Association of Logopedics and Phoniatrics (IALP),[6] International Federation of Oto-Rhino-Laryngological Societies (IFOS).

Kotby's research interest was focused on understanding the function of the small internal laryngeal muscles and the coordination between them.

[11][12][13] Kotby published a series of works on the histopathology of benign lesion of the human vocal fold, in both light microscopy and ultra-structure.

[24] He only accepted to receive the Righteous Among the Nations recognition in the name of his late great uncle Mohamed Helmy in a neutral ground at the German Ministry of Foreign Affairs in Berlin.

He visited and explored major national parks in North and South America, Africa, and Japan.

He visited Egyptology collections in museums around the world (Cairo, Turin, Leiden, New Museum- Berlin, Louvre, Metropolitan).

He has also attended major operatic and music festivals in Bayreuth, Salzburg, Glyndebourne, Edinburgh, Granada, Torre del Lago, Bregenz, Savonlinna, Santa Fe.