 The study reports the prevalence of cleft lip and palate, CLP, isolated cleft palate, CP, isolated cleft lip, CL, and median cleft, MC, at Marmara University School of Dentistry, Department of Orthodontics between 2000 and 2017. Unilateral CLP was the most common type, followed by CP, males were more prone to have unilateral CLP and bilateral CLP, while females were more prone to have CP. The greatest number of applications was recorded in 2004, and the patients mostly applied in the neonatal period. Complete cleft cases were statistically significantly higher in all types of clefts. This article was authored by Henife Nere Yilmaz, Elvin Wanum Osbulin and Tuba Usten.