The Apostolic Nunciature to Guyana is an ecclesiastical office of the Catholic Church in Guyana. It is a diplomatic post of the Holy See, whose representative is called the Apostolic Nuncio with the rank of an ambassador. The title Apostolic Nuncio to Guyana is held by the prelate appointed Apostolic Nuncio to Trinidad and Tobago; he resides in Trinidad and Tobago.