Germanus of Auxerre (c. 378 – c. 448) is a bishop of Auxerre in Gaul.

He is a saint in both the Roman Catholic and Orthodox churches, commemorated on July 31.

He visits Britain in around 429 and the records of this visit provide valuable information on the state of post-Roman British society.

Based on the scanty evidence, some scholars have argued that his death should be dated to 445, 446, 447 or 448, and others that it should be dated to c. 437 The principal source for the events of his life is the hagiography written by Constantius of Lyon around 480.

Constantius is a friend of Bishop Lupus of Troyes, who accompanies Germanus to Britain, which provides him with a link to Germanus.