Pope Anastasius IV (c. 1073[1] – 3 December 1154), born Corrado Demetri della Suburra, was head of the Catholic Church and ruler of the Papal States from 8 July 1153[2] to his death in 1154.

He was a Roman, son of Benedictus de Suburra, probably of the family of Demetri,[3] and became a secular clerk.

At the time of his election to the papacy in July 1153, he was Dean of the College of Cardinals and probably the oldest member of that body.

[9] During his short pontificate, he played the part of a peacemaker; he came to terms with the Emperor Frederick Barbarossa in the vexing question of the appointment to the See of Magdeburg and closed the long quarrel, which had raged through four pontificates, about the appointment of William Fitzherbert (commonly known as Saint William of York) to the see of York by sending him the pallium in spite of the continued opposition of the powerful Cistercian order.

Anastasius IV also devoted much time and expenses on the Lateran Basilica and Palace back at Rome.