Papias (Greek: Παπίας) was an Apostolic Father, Bishop of Hierapolis (modern Pamukkale, Turkey), and author who lived circa 70–163 AD. It was Papias who wrote the Exposition of the Sayings of the Lord (Greek: Λογίων Κυριακῶν Ἐξήγησις) in five books.

This work, which is lost apart from brief excerpts in later writings, is an important early source on Christian oral tradition and especially on the origins of the canonical Gospels.

Very little is known of Papias apart from what can be inferred from his own writings. He is described as "an ancient man who was a hearer of John and a companion of Polycarp" by Polycarp's disciple Irenaeus (c. 180). Eusebius adds that Papias was Bishop of Hierapolis around the time of Ignatius of Antioch. In this office Papias was presumably succeeded by Abercius of Hierapolis. The name Papias was very common in the region, suggesting that he was probably a native of the area.

The work of Papias is dated by most modern scholars to about 95–120.