Eric

 and its female variant Erica occurs several times in the Doctor Who universe and the relevant real world. They are listed below in alphabetical order by surname. If no surname is available, alphabetization occurs by the disambiguation term — that is, the bit between the parentheses in a title like Waitress (Random Shoes).

As only name

 * Eric (DW: A Christmas Carol)
 * Eric (DW: The Time Warrior)
 * Eric (MA: Goth Opera)

As first name

 * Eric Klieg (DW: The Tomb of the Cybermen)
 * Eric Lawson (TWN: The Twilight Streets)
 * Eric Leeson (DW: Colony in Space)
 * Eric Charles Vincent (BFA: The Sirens of Time)

Guest

 * Eric Anthony Roberts as the Master and Bruce in the 1996 Doctor Who TV movie
 * Eric Steinberg, who played Zheng Yibao in TW: The Middle Men.

Featured

 * Eric Deacon, who played Mykros in DW: Timelash.
 * Eric Elliot, who played the Commander of the Ark in DW: The Ark.
 * Eric Flynn, who played Leo Ryan in DW: The Wheel in Space.
 * Eric Francis, who played the First Elder in DW: The Sensorites.
 * Eric Potts, who played Oliver Charles in Aliens of London.
 * Eric Smith, who played a Thal in DW: The Daleks.
 * Eric Thompson, who played Viscount Gaston de Leran in DW: The Massacre of St Bartholomew's Eve.

Monster specialists

 * Eric Loren, who played Diagoras in DW: Daleks in Manhattan and Dalek Sec in DW: Evolution of the Daleks.

Extra

 * Eric Danot, who played the Castellan Guard in DW: The Invasion of Time.
 * Eric Dodson, who played the Headman in DW: The Visitation.
 * Eric Hillyard, who played Dr. Reeves in DW: The Dæmons.
 * Eric Lindsay, who had uncredited roles in DW: Revelation of the Daleks and DW: Dragonfire.
 * Eric Mason, who played Senior Prison Officer Green in DW: The Mind of Evil and CPO Smedley in DW: The Sea Devils.
 * Erica Eirian, who played Jane's mother in DW: Fear Her.

Lighting

 * Eric Monk, who provided the Studio Lighting for DW: Terror of the Autons and DW: The Mind of Evil.
 * Eric Wallis, who provided the Studio Lighting for DW: Time-Flight.

Visual effects

 * Eric Alba (Frederick G. Alba), the visual effects supervisor for the 1996 Doctor Who TV movie.

Writers

 * Eric Pringle, who wrote DW: The Awakening.
 * Eric Saward, who worked as a writer and, later, Script Editor, for Doctor Who during the 1980s.

Other

 * Eric Bates, a Property Master for Torchwood.
 * Eric Mival, a Film Editor for DW: The War Machines.

Comics

 * Eric Eden, a comic artist for Eagle and TV Century 21.