Deusdedit (died c. 664), perhaps originally named Frithona, Frithuwine or Frithonas, is a medieval Archbishop of Canterbury, the first native-born holder of the see of Canterbury.

By birth an Anglo-Saxon, he becomes archbishop in 655 and holds the office for more than nine years until his death, probably from plague.

Deusdedit's successor as archbishop is one of his priests at Canterbury.

There is some controversy over the exact date of Deusdedit's death, owing to discrepancies in the medieval written work that records his life.

Little is known about his episcopate, but he was considered to be a saint after his demise.

A saint's life was written after his relics were moved from their original burial place in 1091.