Rai Raya Rai Venkata Rao (born T. Venkata Rao, also spelt Venkatta Row; died 1843), was an Indian administrator and statesman who served as Diwan of Travancore 1821–1829 and 1838–39.

In 1842, he was appointed Diwan of Hyderabad and served till 1843, when he returned to Bangalore due to ill-health.

In 1819, Venkata Rao joined the Travancore state service as an assistant to Colonel McDowall, the British resident.

During his tenure as Diwan Peishkar, Venkata Rao repaired and refurbished the Padmanabhaswamy Temple in Trivandrum and modified the dress codes of the sepoys.

In 1821, the Diwan, Reddy Row, accepted a jagir of two villages from the queen; Venkata Rao and his ally, the immediately preceding Diwan Raman Menon Dalawa, managed to oust and replace Row in the scandal.