Lynda Bird (born 1945) is a former first daughter of the United States. She is the daughter of president Lyndon B. Johnson.

Bird was engaged to Bernard Rosembach before she met George Hamilton, who himself had been engaged to Susan Kohner. In 1966, Bird and Hamilton began dating. Because at the time the Secret Service had just been installed to protect United States presidents, their families and other worldwide leaders (this because of the assassination of John F. Kennedy), the Hamilton-Bird couple were one of the first to be protected by secret servicemen.

At an edition of the Modern Screen magazine, Hamilton declared that he could love Bird "even if she werent the presidents daughter". Nevertheless, the pair eventually broke up.