Introduction- The notion of oral health-related quality of life (OHRQoL) seeks to define patients' perceptions of oral health. There is an increasing interest in the impact of oral health on quality of life. The aim of present study was to assess oral health-related quality of life among adults visiting the outpatient department of a hospital in Patna, Bihar. Material and methods- The present cross-sectional study was conducted among 200 patients attending the Department of Dentistry, Patna Medical College & Hospital, Patna, Bihar during the study period of 2 months. An investigation was done by using a combination of questionnaire and clinical examination. Questionnaire was on oral health impact profile- 14 (OHIP14) and the subjects were clinically examined for dental caries using DMFT index. All statistical analyses were conducted utilising the Statistical Package for the Social Sciences, version 25.0 software. Results- The mean age of patient was 43.25 years, out of 200 patients 60% were female and 40% were male. The mean value of decayed teeth was 2.9±1.7, mean value of missing teeth was 0.99±1.1, mean value of filled teeth was 1.5±2.1 and mean value of overall DMFT was 5.3±2.5. Significant association (p<0.05) was found between decayed , missing and DMFT components with OHIP – 14 domains and overall score while non significant association was found between filled teeth and OHIP-14 domains (p=0.051). Conclusion– OHIP-14 scores exhibited a significant correlation with clinical indicators of oral health status and substantially influence oral health-related quality of life.