Badrinarayan Ranganathan is an Indian film director and screenwriter who primarily works in Tamil film industry. He started his career by directing a Television series Malargal for Sun TV. He then shifted to cinema by working as an assistant to Sundar C. and also made his directorial debut by directing him in Veerappu, remake of Malayalam film Spadikam. He again collaborated with Sundar C. with Ainthaam Padai, film received negative reviews with critics accusing director for plagiarism by lifting scenes from Malayalam film Devasuram. He then directed Thambikku Endha Ooru with Bharath, the film received negative reviews and became unsuccessful at box office. He wrote dialogues for Sundar C.'s directorial Kalakalappu.