The actor's representative told People.com Wednesday the wedding took place Friday.
No other details about the island ceremony were immediately reported.
The couple have been engaged since 2009 and have a 4-year-old son together.
Noth is best-known for his work on TV's "Law & Order," "Sex and the City" and "The Good Wife."
Millions of Getty images now available for free via embed tool
NBC reportedly holds celebs hostage to Jimmy Fallon's show