Arun Vaidyanathan is an Indian-American film director, producer and screenwriter of feature films, short films and television dramas. He directed his first full-length feature film in Tamil, Achchamundu! Achchamundu!, which released in July 2009. He produced a Tamil romantic-comedy film, Kalyana Samayal Saadham in 2013. In 2014, he directed Mohanlal in a Malayalam political satire film, Peruchazhi.