Background: Dental caries and other conditions are public health challenges worldwide. The World health organization reports the burden of oral diseases to be less in developing countries including Africa and higher in the developed world. Despite health sector improvement in Saudi Arabia, dental caries has remained among the leading causes of consultation at all levels of the health care delivery pyramid with high numbers in rural communities. The prevalence of dental caries experienced in Saudi Arabia is found to be high but few studies have been conducted assessing the predisposing risk factors, especially in adults. Oral health’s association with general health, morbidity, and mortality in adults highlights its importance for healthy. Poor oral health is not an inevitable consequence of and a proactive, multidisciplinary approach to early recognition and treatment of common pathologies increases the likelihood of maintaining good oral health. Some individuals may not have regular access to a dentist, and opportunities to improve oral health may be lost if health professionals fail to appreciate the importance of oral health on overall well-being and quality of life, it is important to note that there is a bi-directional dimension to oral health and chronic diseases, underscoring the value of a multidisciplinary approach to maintaining oral health in adults. Aim of the study: To determination of dental caries prevalence and associated risk factors among adult outpatients who attended at Saudi Arabia 2022. Method: cross sectional study conducted at outpatient dental clinics in primary health care center at Saudi Arabia in Sample population consists of Saudi out patients aged 25 <55 years attending. Our total participants were (200). Results:. Show among the socio-demographic details among the adults patients regarding age majority of the study groups from the 35 44 years were (44.0%) the residence area the majority of the respondents urban were (76.0%) regarding having an old father/mother the most of the participants answer No were (82.0%) the education status the majority of the respondents medium were (29.0%).Conclusion: The prevalence of dental caries was high in the study population and the multifactorial risk factors associated with its development were found to be poor oral hygiene, frequent consumption of sugary snacks and beverages, gender, and age, recommended further studies to awareness these multifactorial risk factors on a larger scale.