The newly-elected politician wed fiancée Lauren Birchfield on Saturday at the Community Church in Corona del Mar, Calif., his office tells NBC News. The ceremony was officiated by her father, the Rev. Jim Birchfield.
Kennedy, 32, and Birchfield, 28, met at Harvard Law School, and they were married in front of family and friends.
"The bride and groom are extremely grateful for all the well wishes and for the outpouring of support and friendship they have received this year," the newlyweds say in a statement to NBC News.
Kennedy III, the son of former Rep. Joseph Kennedy II, and Robert F. Kennedy's grandson, represents Massachusetts's 4th Congressional District.