Background: Usually, parents are less aware that preventive oral health and dental procedures may have an impact on the general health and well-being of the children. Parental negligence may result in unfavourable dental and general health consequences. Parental knowledge of preventive measures towards oral health is important for proper oral hygiene maintenance, control of caries, care of primary teeth in children.Aim: To analyse the attitude and awareness towards preventive dentistry among parents of Anganwadi children in Chennai.Methodology: This was a questionnaire-based cross-sectional study conducted among 316 participants. The study included the parents of Anganwadi children residing in Zone-4 Chennai. A questionnaire was prepared and distributed to seven Anganwadi centres which was then given to participants and responses were collected after two days. The data were collected systematically and analysed using the SPSS software version 20.Results: 316 study subjects participated in the study. The study revealed a significant difference statistically in knowledge, attitude and awareness among parents in various categories. About 81% of the participants were aware that sugar and sugar-containing diet can cause dental decay whereas, only 25% of them had the understanding that fluorides can help prevent dental decay.Conclusion: Awareness about preventive dental practices such as the appropriate duration of brushing, the influence of dietary sugars on dental decay, the impact of oral health on the general health of children existed among the parents. At the same instant, participants were found to be less aware of the role of fluorides in caries control, eruption time of permanent dentition, timely dental visits and trauma care.