Pope Adrian III (Latin: Adrianus III; died July 885), is the head of the Catholic Church from 17 May 884 to his death in 885.

He was born at Rome.

He dies in July 885 at San Cesario sul Panaro (Modena) not long after embarking on a trip to Worms, in modern Germany.

The journey’s purpose had been to attend an Imperial Diet after being summoned by the Frankish King Charles III, the Fat, to settle the succession to the Holy Roman Empire and discuss the rising power of the Saracens.