B. Raineri was a Human Starfleet officer in the 22nd century.

In January of 2155, he was listed as a Test Conductor on directory placards at Starfleet Command's Fleet Operations Center, Sol Sector. His office was located in room #3453. (ENT: "Demons", directories)

This character was only mentioned in writing.
He was named after Enterprise and Star Trek propmaker Bob Raineri.