Tonsillomycosis is fungal colonization that obstruct tonsillar crypts present either unilateral or bilateral as concretions of the tonsils associated with halitosis. Incidence of oral cavity invasive mycoses is low in a healthy individual but can involve the tonsils of immunocomptent children. Complications is rare and may include: dehydration and renal failure. Superficial tonsillomycosis is treated locally with simple oral antifungal agents as nystatin and deep invasive tonsillomycosis is treated with systemic agents, such as amphotericin or fluconazole. the definitive treatment for tonsillomycosis is Tonsillectomy.AIM OF THE WORK: The aim of this work is to detect the incidence of tonsillomycosis in chronic tonsillitis in immunocompetent children on histopathological basis after-tonsillectomy.PATIENT AND METHODS: this study carried out on thirty child suffer from chronic tonsillitis (13 male &17 female) after doing surgical bilateral total tonsillectomy. Tonsils collected in 10% buffered formalin then cutted ,dehydrated and stained with (H&E and PAS) stains for histopathological examination.RESULTS: Incidence of Tonsillomycosis in immunocomptent children represents 10%. six tonsils are positive for fungal infection with H&E and PAS stain. All examined cases revealed reactive follicular hyperplasia with multiple; large; variable sized; oblong germinal centers occupying the sub epithelial tissues.Three tonsils (5 %) revealed the picture of Candidiasis with prominent blastopores.Two tonsils (3.3 %) revealed the picture of Aspergillosis with septate hyphae.One tonsil (1.7 %) revealed the picture of Rhinospordiosis with variable-sized cysts.CONCLUSION: Tonsillomycosis is a part of chronic tonsillitis, associated with bad oral hygiene, moderate socioeconomic level and rural distribution areas.Tonsillomycosis is long term process in immunocomptent children ended finally with tonsillar hypertrophy due to crypt concretion or calcification. Tonsillomycosis is significant with hypertrophic than atrophic tonsils, children with mild to moderate Neutropenia. Tonsillectomy is the definitive treatment for tonsillomycosis..