The Anaikoddai seal is a soapstone seal that was found in Anaikoddai, Sri Lanka during archeological excavations of a megalithic burial site by a team of researchers from the University of Jaffna. The seal was originally part of a signet ring and contains one of the oldest Brahmi inscriptions mixed with megalithic graffiti symbols found on the island. It was dated paleographically to the early third century BC.