This list of performers has all actors and actresses who appeared in, or gave voice to, roles in TNG Season 4.

AEdit

• Ian Abercrombie as Voiceover
• Marc Alaimo as Macet
• Rhonda Aldrich as Madeline
• Chad Allen as Jono (aka Jeremiah Rossa)
• Steven Anderson as Nilrem

BEdit

• Majel Barrett as:
  • Lwaxana Troi
  • Computer voice
• Theodore Bikel as Sergey Rozhenko
• Earl Billings as Thomas Henry
• David Tristan Birkin as René Picard
• Kim Braden as Janet Brooks
• Georgia Brown as Helena Rozhenko
• Amick Byram as Paul Hickman
• LeVar Burton as Geordi La Forge

CEdit

• Lanei Chapman as Sariel Rager
• George Coe as Avel Durken
• Rosalind Chao as Keiko O'Brien
• David Coburn as Brower
• Tracee Lee Cocco as Jae (uncredited)
• Charles Cooper as K'mpec
• Dennis Creaghan as Louis
• Denise Crosby as Sela
• J.D. Cullum as Toral, son of Duras

D Edit

• Buddy Daniels Friedman as
  • Bolian archaeologist (uncredited)
  • Bolian barber (uncredited)
• Cory Danziger as Jake Potts
• John de Lancie as Q
• Chris Demetral as Jean-Luc Riker/Ethan
• Elizabeth Dennehy as Shelby
• Shelly Desai as V'Sal
• Debra Dilley as Sela (photo double) (uncredited)
• Lawrence Dobkin as Kell
• Michael Dorn as Worf
• Marta Dubois as Ardra

EEdit

• Samantha Eggar as Marie Picard
• Michael Ensign as Krola
• Bill Erwin as Dalen Quaice

FEdit

• John Fleck as Taibak
• Michelle Forbes as Dara
• Jonathan Frakes as William T. Riker
• Bruce French as Sabin Genestra

GEdit

• Spencer Garrett as Simon Tarses
• Susan Gibney as Leah Brahms
• William Glover as Marley
• Whoopi Goldberg as Guinan
• April Grace as Maggie Hubbell
• Mona Grudt as Graham
• Bob Gunton as Benjamin Maxwell

HEdit

• Kim Hamilton as Songi
• John Hancock as Haden
• Robert Harper as Lathal Bine
• George Hearn as Berel
• Jennifer Hetrick as Vash
• Sherman Howard as Endar
• Jana Marie Hupp as Pavlik
• Craig Hurley as Peeples

KEdit

• Andreas Katsulas as Tomalak
• Jeremy Kemp as Robert Picard
• Nicholas Kepros as Movar
• Thomas Knickerbocker as Johnny
• Mary Kohnert as Tess Allenby
• Kay E. Kuter as Cytherian

LEdit

• Paul Lambert as Howard Clark
• Thad Lamey as Devil
• James Lashly as Kopf
• Page Leong as April Anaya
• Franc Luz as Odan

MEdit

• Dennis Madalone as Hendrick
• Tom Magee as Fek'lhr
• Barbara March as Lursa
• Patrick Massett as Duras, son of Ja'rod
• Carolyn McCormick as Minuet
• Gates McFadden as Beverly Crusher
• Terrence McNally as B'Tardat
• Colm Meaney as Miles O'Brien
• Eric Menyuk as The Traveler
• Todd Merrill as Gleason
• Christopher Michael as the Coalition lieutenant (see the Coalition)
• Don Mirault as Hayne
• Duke Moosekian as Gillespie
• George Murdock as J.P. Hanson

NEdit

• Bebe Neuwirth as Lanel
• William Newman as Kalin Trose
• Jim Norton as Albert Einstein

OEdit

• George O'Hanlon, Jr. as Transporter chief (see USS Enterprise (NCC-1701-D) personnel)
• Robert O'Reilly as Gowron
• Tom Ormeny as Klingon first officer (see Unnamed Klingons)
• Nicole Orth-Pallavicini as Kareel Odan

PEdit

• Sachi Parker as Tava
• Sierra Pecheur as T'Pel
• Randy Pflug as Tarchannen III alien shadow (uncredited)
• Brian Phelps as Tarchannen III alien (uncredited)
• Suzie Plakson as K'Ehleyr
• Maryann Plunkett as Susanna Leijten

REdit

• Clive Revill as Sir Guy of Gisbourne
• Michael Rider as a security guard (see USS Enterprise (NCC-1701-D) personnel)
• Marco Rodriguez as Telle
• Adam Ryen as Willie Potts

SEdit

• Michele Scarabelli as Jenna D'Sora
• Alan Scarfe as Mendak
• Dwight Schultz as Reginald Barclay
• Carolyn Seymour as Mirasta Yale
• Ann Shea as Nellen Tore
• Georgina Shore as Van Mayter
• Jean Simmons as Norah Satie
• Marina Sirtis as Deanna Troi
• Ben Slack as K'Tal
• Brent Spiner as:
  • Data
  • Lore
  • Noonian Soong
• Joi Staton as a servant (see Unnamed illusory people)
• Patrick Stewart as Jean-Luc Picard
• Jon Steuer as Alexander Rozhenko
• David Ogden Stiers as Timicin
• Carel Struycken as Homn

TEdit

• Barbara Tarbuck as Leka Trion
• Nick Tate as Dirgo
• Deborah Taylor as Chantal Zaheva
• Dana Tjowander as Barash
• Brian Tochi as Kenny Lin
• Tony Todd as Kurn
• Paul Tompkins as Anthony Brevelle
• Beth Toussaint as Ishara Yar
• Barbara Townsend as Connaught Rossa
• Saxon Trainor as Linda Larson
• Marcelo Tubert as Acost Jared

VEdit

• Vladimir Velasco as Tan Tsu
• John Vickery as Andrus Hagan

WEdit

• Basil Wallace as a Klingon guard (see Unnamed Klingons)
• Gwynyth Walsh as B'Etor
• Doug Wert as Jack Crusher
• Wil Wheaton as Wesley Crusher
• Edward Wiley as Vagh
• Mirron E. Willis as IKS Vorn Klingon guard (see Unnamed Klingons)
• Pamela Winslow as McKnight
• Time Winters as Daro
• Henry Woronicz as J'Dan

YEdit

• Patti Yasutake as Alyssa Ogawa