Jeff

Jeff may refer to:

Only name given

 * Jeff, a maintenance worker at the Hyperville complex. (NSA: Autonomy)
 * Jeff a human who worked for the Brainy Crisps company. (QR: Code of the Krillitanes)
 * A name by which the Eleventh Doctor knew Santa Claus. (DW: A Christmas Carol)

First names

 * Jeff Angelo, a Leadworth resident whose laptop the Doctor borrowed. (DW: The Eleventh Hour)