This study was conducted to determine the proportion and factors associated with periodontal disease among younger adult attended Al Fatah Dental Faculty in Libya. A cross sectional study with universal sampling methods was carried out from July 2010 until September 2010 among 70 Libyan subjects aged between 20-35 years. The data in this study was collected using self administrated questionnaire, followed by oral examination done by trained dentists. The results of this study showed that, the prevalence of periodontal disease in Libyan subjects was 75.7%. Gender, oral care habits, smoking were found significantly associated with presence of periodontal disease. Gingivitis has been found the most common types of periodontal disease (94%). High percentage of periodontal disease in this study was among men (87.9%) compared to women (69.9%). In conclusion, modifiable factors like changing lifestyle such as avoiding smoking and practicing oral care can be promoted to prevent periodontitis.