C. Graffeo was a 23rd century Starfleet captain attached to the Starfleet Academy's Starfleet Training Command. Graffeo served as instructor for beam technology.
In 2285, Graffeo was listed on a directory placard found on the 2nd level of Starfleet Training Command. (Star Trek II: The Wrath of Khan)
- Graffeo was named after set decorator Charles M. Graffeo.