The “Clueless” actress filed for divorce from Christopher Jarecki on Friday in Los Angeles County Superior Court.
The two have been separated for two years.
Divorce documents say the 41-year-old Silverstone and the 47-year-old Jarecki will share custody of their 7-year-old son.
The papers cite irreconcilable differences as the reason for the split, and say spousal support will be based on a prenuptial agreement the couple signed when they were married, without giving details.
Silverstone married the rock musician Jarecki in 2005 after eight years of dating.