Pedubastis I or Pedubast I is an Upper Egyptian Pharaoh of Ancient Egypt during the 9th century BC.

Based on lunar dates which are known to belong to the reign of his rival in Upper Egypt Takelot II and the fact that Pedubast I first appeared as a local king at Thebes around Year 11 of Takelot II's rule, Pedubast I is today believed to have had his accession date in either 835 BCE or 824 BCE.

This local Pharaoh is recorded as being of Libyan ancestry and ruled Egypt for 25 years according to the redaction of Manetho done by Eusebius.

He first became king at Thebes in Year 8 of Shoshenq III and his highest dated Year is his 23rd Year according to Nile Level Text No.

29.

This year is equivalent to Year 31 of Shoshenq III of the Tanis based 22nd Dynasty of Egypt; however, since Shoshenq II only controlled Lower Egypt in Memphis and the Delta region, Pedubast and Shoshenq III were not political rivals and may even have established a relationship.