Background: Fissured Tongue (FT) is a benign asymptomatic disorder manifested with grooves that can vary in size and depth on the dorsum of the tongue. The prevalence of FT worldwide has been reported to be as high as 30.5%.

Aim: The present study was designed to determine the prevalence of FT among the Libyan population and also to evaluate its association with age, gender, burning symptoms and some medical conditions.

Materials and Methods: Patients attending The Department of Oral Medicine and Diagnosis at Tripoli Dental Services Center, Ministry of Health, Tripoli-Libya. The patients were examined for the presence of FT over one year.

Statistical analysis: Chi-square test was done to assess the correlation of FT with age, gender, burning sensation and some medical conditions.

Result: The prevalence of FT among Libyan patients was found to be as high as (37.9%). The most frequent type of FT seen was in mild type. Geographic Tongue (GT) revealed high association with FT (P < 0.001). Diabetes Mellitus (DM) (6.1%) was the most frequent medical condition in subjects with fissured tongue, followed by hypertension (3.5%).

Conclusion: FT among the Libyan population revealed a higher prevalence. FT was most prevalent in the 40- 59 age group and more common in females. A high significant association was found between the occurrence of FT and GT. There was a significant association of FT with some medical conditions particularly DM.