"Another day at the office. #StarWars #DarthVader #selfies #gpom," said the movie franchise's first message, which was posted Monday.
The photo shows Darth taking a picture of himself with his cell phone with apparently dead Stormtroopers on the floor behind him.
TVGuide.com said the "Star Wars" feed has already attracted more than 120,000 followers.
"Star Wars Episode VII," which is set after Darth Vader was killed, is to go into production this spring. It is scheduled to hit theaters in 2015.