Kanjeng Raden Tumenggung Irwan Susetyo Pakusadewo, better known by the stage name Tio Pakusadewo (born 2 September 1963), is an Indonesian actor. He has won two Citra Awards for Best Leading Actor at the Indonesian Film Festival, for Lagu untuk Seruni (1990) and Identitas (2008).

Tio was born on 2 September 1963 in Jakarta. He showed interest in the arts at an early age, taking up dance while in elementary school. In senior high he was active with the school's theatre troupe, and after graduating in 1985 Tio enrolled in the Jakarta Art Institute. On the side he worked as a model, and in 1987 he made his feature film debut playing opposite Rano Karno in Bilur-Bilur Penyesalan (Stripes of Regret), an adaptation of the novel by Mira W.