Rio Dewanto began his debut career as film actor when played his cameo role in the two films, titled
Pintu Terlarang (2009) and
Ratu Kosmopolitan (2010). In 2011, Dewanto played the lead role as Hendra/Ping Hen, in a drama film that emphasized Indonesian pluralism which was directed by
Hanung Bramantyo, titled
? (née
Question Mark). The next year, Dewanto played as John Evans, the main character in the film
Modus Anomali which was directed by
Joko Anwar. Dewanto played his fourth role as Octa in a sequel of a film, titled
Arisan! 2 (2011) and sang the original soundtrack song for "Cinta Terlarang". For his performance in these films, Dewanto earned his first 2012 Favorite Supporting Actor trophy award at
Indonesian Movie Awards. Dewanto also starred with
Atiqah Hasiholan (now his wife) in the film
Hello Goodbye where they filmed the movie in
South Korea. In addition, Dewanto starred in Indonesian small screens, including the popular drama which aired in
SCTV,
Love in Paris season 1 and 2. ==Personal life==