Speaking to Coming Soon, the actor revealed that filmmakers Guillermo del Toro and Peter Jackson are currently concentrating on getting the first of the Hobbit prequels made, which won't feature Mortensen's Aragorn.
"I think they're just worried about shooting the first part of that movie which doesn't involve my character," Mortensen said. "My character is around at times - in the middle, but it would only be if they made a second movie or connecting movie that connected The Hobbit to The Lord Of The Rings that I might appear, which would be great."
Aragorn does not appear in JRR Tolkien's fantasy novel The Hobbit, but is included in the supplemental appendices from Lord Of The Rings that brings the two stories together.
Mortensen can next be seen in the big-screen adaptation of Cormac McCarthy's Pulitzer Prize-winning novel The Road.