Honorific titles of Clergy.

'His/Her Holiness' is honorific title of clergy. 'His/Her Holiness' is used for the Pope(Catholic Church), the Dalai Lama(Lamaism, Tibet Buddhism), and the authority person in other religion.

<Example>
His Holiness Pope Benedict XVI.
His Holiness the 14th Dalai Lama.

Vatican the Holy See
http://www.vatican.va/

The Catholic Bishops' Conference of Japan
http://www.cbcj.catholic.jp/

LIAISON OFFICE OF H.H.THE DALAI LAMA for Japan &East-Asia
http://www.tibethouse.jp/

Tibetan Government in Exile's Official Web Site
http://www.tibet.com/