The present research paper is focusing on quantifying the impact of COVID-19 on social mediamarketing in Tamil Nadu which raises the COVID-19 pandemic has accelerated the adaptation ofsocial media marketing. The primary data on the field are collected through questionnaires andsecondary data were collected through internet and journals. A sample of 117 respondents iscollected from social media users, out of which, most of the respondents are of 21–30 age group. Itwas founded that there is an increase in social media usage during lockdown. Thus, the studyconcludes that there is a high increase of purchasing through social media during COVID-19pandemic in Tamil Nadu which was not much before the happening of COVID-19 pandemic.