In 1996, he was awarded an honorary degree for services to the arts by the University of Kent at a graduation ceremony held in Canterbury Cathedral. In 1999, he received the Crystal Globe award for outstanding artistic contribution to world cinema at the Karlovy Vary International Film Festival. In November 2004, he was awarded an honorary knighthood by the United Kingdom.
In 1996, Zeffirelli came out as gay, but thereafter preferred to be discreet about his personal life. Zeffirelli said that he considered himself "homosexual" rather than gay, as he felt the term "gay" was less elegant. Zeffirelli adopted two adult sons, men with whom he had lived and who worked for him for years, managing his affairs.