Publius Ostorius Scapula (died 52) was a Roman statesman and general who governed Britain from 47 until his death, and was responsible for the defeat and capture of Caratacus.
Publius Ostorius Scapula was probably the son of Quintus Ostorius Scapula, the first joint commander of the Praetorian Guard appointed by Augustus and later prefect of Egypt.
Nothing is known of his early career. He was suffect consul, probably in 46. In the winter of 47 he was appointed the second governor of Roman Britain by the emperor Claudius, succeeding Aulus Plautius. The south and east of the island was securely occupied and alliances had been made with tribes outside the Roman-controlled area, but other tribes continued to resist. Believing a new governor would be reluctant to campaign so late in the year, they staged attacks and uprisings.
Ostorius disabused them of this notion and responded vigorously, attacking relentlessly and allowing the native resistance no time to regroup. He apparently (based on an of a corrupt passage in Tacitus's Annals) declared his intention to disarm all the Britons south and east of the rivers Trent and Severn. The geographical area described has led to discussion about the role of the Fosse Way as a desired frontier line during the period as it links the Trent and the Severn.
The Iceni, a tribe based in Norfolk who had not been conquered but allied themselves with the Romans voluntarily, objected to this plan and led neighbouring tribes in an uprising. Ostorius defeated them by storming a hill fort, possibly Stonea Camp in the Fens near March in Cambridgeshire, in a hard-fought battle. His son, Marcus Ostorius Scapula, won the corona civica for saving a Roman citizen's life during the fighting. The Iceni remained independent, and it is likely that Prasutagus was installed as a pro-Roman ruler at this time.