Both stars work with Christian Dior. Portman is spokesmodel for Miss Dior Cherie perfume. Galliano has been suspended as Dior's creative director pending an investigation into an alleged anti-Semitic incident in a Paris cafe last week.
Portman's statement was provided Tuesday to The Associated Press after a video posted online showed Galliano, in a different incident, drunkenly telling a cafe patron, "I love Hitler."
Portman won the best actress Oscar on Sunday for "Black Swan."
