John Stuart Gaden AO (born 13 November 1941) is an Australian actor and director known particularly for his stage career, although he has also made some film and television appearances.

After appearing with the Sydney University Dramatic Society, he decided to pursue a theatrical career in lieu of a legal one.

[1] In 1970 he appeared in a production of Hadrian the Seventh in Perth, directed by Sir Tyrone Guthrie, and with fellow actors Arthur Dignam and Judy Nunn.

[8] He was won two Helpmann Awards for Best Male Actor in a Play: in 2001, for Yasmina Reza's The Unexpected Man, and in 2007, for The Lost Echo.

In 2005 he won a Helpmann Award for Best Male Actor in a Supporting Role in a Play for Michael Frayn's Democracy.