Mahanandin was the last king of the Shishunaga dynasty of the Indian subcontinent. The dynasty ruled parts of ancient India around the city of Pataliputra (present day Patna, Bihar).

Puranas list Nandivardhana as the ninth son of kalashoka he was succedded by his son Mahanandin,the last Shishunaga king. Mahanandin was killed by his illegitimate son from a Shudra wife named Mahapadma Nanda.