Los Angeles police received a report on Tuesday that someone was threatening to vandalize the star. When officers went to check it out, the damage had been done.
The words have been scratched off, and the brass medallion is gone.
Police set up a tent to cover the star and placed traffic markers around it. Officers are doing extra patrols in Hollywood as a result.
There was no word on Wednesday from the Hollywood Chamber of Commerce on plans to fix it.
Trump's star is located on Hollywood Boulevard between Orange Drive and Highland Avenue, right across the street from the El Capitan Theatre.
Trump's star has been targeted by vandals in the past. It has also been used by a street artist, who built a tiny wall around the star back in July.