Yes. In India, you can potentially file a defamation case for false social media posts if the post contains a false imputation about you and is intended, or known likely, to harm your reputation. Defamation is covered under Section 356 of the Bharatiya Nyaya Sanhita (BNS), 2023.
For example, if someone knowingly posts on Facebook, Instagram, X, YouTube, WhatsApp, or another platform that you committed a crime, cheated someone, or behaved dishonestly when the allegation is false and damages your reputation, it may amount to defamation.
What you should do
Preserve evidence – Take screenshots and save the complete post, profile/account details, URL, date and time, comments, shares, and messages.
Identify the person responsible – Keep evidence linking the account to the person who made the post, if possible.
Consider sending a legal notice – A lawyer can demand removal/correction of the false statement and an apology.
Consider criminal proceedings – Section 356(2) provides punishment for defamation, including imprisonment up to two years, fine, both, or community service.
Consider a civil claim – Depending on the circumstances, you may also pursue a civil remedy seeking damages for reputational harm.
However, every negative social-media post is not automatically defamation. The exact words, whether they are factual allegations or opinions, whether they are substantially true, the intention, and the effect on your reputation all matter. The BNS also contains exceptions, including certain truthful statements made for the public good and good-faith opinions in specified circumstances.
In short: If someone has deliberately published a false allegation about you online that harms your reputation, you may have grounds to take legal action. Keep the evidence before the person deletes or edits the post and consult a lawyer with the exact screenshots and context.