Singireddy Nag Ashwin Reddy (born 23 April, 1986), known professionally as Nag Ashwin, is an Indian film director, screenwriter, and producer who predominantly works in Telugu cinema. He studied film direction at the New York Film Academy. He began his filmmaking career as an assistant director to Sekhar Kammula on *Leader* (2010) and *Life Is Beautiful* (2012). He made his feature directorial debut with the coming-of-age drama *Yevade Subramanyam* (2015), starring Nani and Vijay Deverakonda. The film was partially filmed at Everest Base Camp and won him the Nandi Award for Best Debut Director. He directed the biographical drama *Mahanati* (2018), about actress Savitri. The film won three National Film Awards, including Best Feature Film in Telugu, and earned Ashwin the Filmfare Award for Best Director – Telugu. Ashwin directed the segment "xLife" in the anthology film *Pitta Kathalu* (2021) and produced the comedy *Jathi Ratnalu* (2021) under Swapna Cinema. In 2024, he directed the science-fiction film *Kalki 2898 AD*, featuring Prabhas, Amitabh Bachchan, Kamal Haasan, and Deepika Padukone.