Adrianus Johannes Simonis was a Dutch cardinal of the Catholic Church. He served as Archbishop of Utrecht from 1983 to 2007, and was made a cardinal in 1985.

The Archdiocese of Utrecht is an archdiocese of the Latin Church of the Catholic Church in the Netherlands. The Archbishop of Utrecht is the metropolitan of the ecclesiastical province of Utrecht. There are six suffragan dioceses of the province: Roman Catholic Dioceses of Breda, of Groningen-Leeuwarden, of Haarlem-Amsterdam, of Roermond, of Rotterdam, and of 's-Hertogenbosch. The cathedral church of the archdiocese is Saint Catherine's Cathedral, which replaced the prior cathedral, Saint Martin's Cathedral after it was taken by Protestants in the Reformation.