Police Officer Cleon Joseph confirmed on Thursday that the missing persons report was filed this week and the 32-year-old actor hasn't been found. The Los Angeles Times reports Stahl's wife last saw the actor on May 9.
Foul play isn't suspected.
People magazine reports the couple has been embroiled in a child custody fight.
Stahl was a child star who first got attention of his performance in the 1993 film "The Man Without a Face."
As an adult, he appeared in the 2003-2005 HBO series "Carnivale'" and in 2003's "Terminator 3" as John Connor. He also starred in "Mirrors 2" in 2010.