Robert Downey Jr returns in the third instalment of the franchise as Tony Stark, alongside co-stars Gwyneth Paltrow, Don Cheadle and Ben Kingsley.
The 17-second clip, posted by ENTV shows new footage of Pepper Potts in danger, Iron Man fighting and a faceless villain.
The teaser also reminds fans that a full world premiere trailer for the movie will debut on Tuesday, October 23.
Marvel Studios recently released the synopsis of the upcoming movie, revealing that this time around Tony Stark will find "his personal world destroyed at his enemy's hands".
Iron Man 3's release date has been set for May 3, 2013.
Photo gallery - Marvel at the movies: