The ceremony was attended by a small gathering of friends and family. It is the first marriage for both artists.
The bride wore a design by Carolina Herrera.
The two met at a benefit concert to aid tsunami victims last Janaury. Chesney was performing, while Zellweger answered telephones.
Zellweger recently atteneded a concert where Chesney was perfoming in Jacksonville, Florida. She brought the singer a margarita on stage.
For Zellweger, 36, it’s another relationship with a music man. The actress also dated the lead singer from the group The White Stripes, Jack White.