Ransom, who was ordered by a judge to stay 100 yards away from Goldblum until June 12, 2015, violated the order last night when she was spotted within 20 yards of the actor.
The 50-year-old woman was spotted by security personnel at the Ahmanson Theater where Goldblum was holding a seminar, the Los Angeles Country Sherriff's Department confirms to E! News.
Ransom was arrested and booked at East Los Angeles Sheriff's Station where she is being held in lieu of $20,000 bail.
She first met Goldblum while attending one of his acting classes 11 years ago.