A virus is composed of nucleic acid either DNA or RNA, surrounded by a protein coat.It requires a living cell to multiply. A viral infection can lead to a spectrum of symptoms from asymptomatic to severe disease.Worldwide,5% of health-care-related infections are being transmitted. Dentists are considered being a high risk group for cross-infection.Therefore it is important that dental students have adequate knowledge and awareness of viral infections.The aim of the study is to evaluate the knowledge, awareness and attitude about oral manifestations of viral infections among dental students.A self explanatory questionnaire comprising 20 questions was presented to 205 students. The questionnaire enquired about oral manifestations of different viral infections and their precautionary infection control measures .Out of 205 students 86.34% were males and 13.66% were females,189 of them knew that the most common oral manifestation in HIV patients is candidiasis.92.6%agreed that a dentist could get Herpetic paronychia.When asked if treatment of patients with viral infections required special clinics 68.1% responded yes.Our study showed that the dental undergraduate students had adequate knowledge on oral manifestations of viral diseases but lacking knowledge about infection control protocol for the various diseases. Hence students should improve their attitude towards them in their dental practice.