Introduction: developmental oral lesions represent a group of normal lesions that can be found at birth or evident in later life. These lesions include fissured and geographic tongue, Fordyce's granules and leukoedema. Study aims: to investigate the prevalence of some developmental oral mucosal lesions among dental patients wearing dentures who were attending college of dentistry clinics in Aljouf University, and specialized dental center of ministry of health. Methods and subjects: a retrospective design was conducted to collect data from 344 wearing denture dental patients who were attending college of dentistry clinics in Aljouf University, and specialized dental center of ministry of health. A working excel sheet was created for patients and included data related to personal information such as age and gender; and oral developmental lesions. The software SPSS version 20 was used to analyze data. Statistical tests including frequency, percentages, and One way Anova were used to describe data. Significance was considered at alpha level <0.05.