The 49-year-old actor shot down speculation of a fourth outing for Marvel's most bankable character, reported Contactmusic.
"There isn't one in the pipe. No, there's no plan for a fourth 'Iron Man'," he said on the sidelines of the Toronto Film Festival.
Downey Jr has been on the publicity trail for his new comedy-drama 'The Judge' and he seems to becoming comfortable working outside of the superhero bubble.
Despite signing on for two 'Avengers' sequel, Downey Jr has been reluctant to commit to superhero film after that.