This chapter discusses diseases of nasopharynx, where nasopharynx is a connecting link between oropharynx and nasal cavity and is lined by pseudostratified squamous epithelium and has rigid walls. Pathologically, enlarged nasopharyngeal tonsil is known as adenoids. Sinus of morgagni is a large gap between the upper concave border of the superior constrictor muscle and the base of skull. Traumatic lesions may be because of gunshot injuries. Chronic involvement of the nasopharynx is rare and is involved secondarily to involvement of nose and paranasal sinuses. Nasopharyngeal fibroma is also called juvenile angiofibroma and is the most common benign lesion of nasopharynx. Arteriography may help to know the source and degree of blood supply of tumour for planning surgery. Primary surgical removal of the tumour is the best treatment available. Adjuvant chemotherapy is being used as a palliation therapy for alleviation of pain and prolonging life in some cases.