Editing Robert Stack (section)

=== Television ===
{| class="wikitable sortable"
|-
!Year
!Title
!Role
!Notes
|-
| 1951
| ''[[Pulitzer Prize Playhouse]]''
| Unknown
| Episode: "Broken Dishes"
|-
| 1955
| ''[[The 20th Century Fox Hour]]''
| Mark MacPherson
| Episode: "A Portrait of Murder"
|-
| 1956
| ''[[Producers' Showcase]]''
| Unknown
| Episode: "The Lords Don't Play Favorites"
|-
| 1959–1963
| ''[[The Untouchables (1959 TV series)|The Untouchables]]''
| [[Eliot Ness]]
| 119 episodes<br />[[Primetime Emmy Award for Outstanding Lead Actor in a Drama Series]] (1960)
|-
| 1964
| ''[[Bob Hope Presents the Chrysler Theatre]]''
| Major Morgan
| Episode: "The Command"
|-
| 1965
| ''Memorandum for a Spy''
| James Andrew Congers
| rowspan="2" | Television film
|-
| 1967
| ''Sail to Glory''
| Narrator
|-
| 1968–1971
| ''[[The Name of the Game (TV series)|The Name of the Game]]''
| Dan Farrell
| 26 episodes
|-
| 1974
| ''The Strange and Deadly Occurrence''
| Michael Rhodes
| rowspan="4" | Television film
|-
| rowspan="3" | 1975
| ''The Honorable Sam Houston''
| [[Sam Houston]]
|-
| ''[[Adventures of the Queen]]''
| Captain James Morgan
|-
| ''[[Murder on Flight 502]]''
| Captain Larkin
|-
| 1976
| ''[[Police Story (1973 TV series)|Police Story]]''
| Sergeant Dave Stoddard
| Episodes: "Odyssey of Death"
|-
| 1976–1977
| ''[[Most Wanted (1976 TV series)|Most Wanted]]''
| Captain Lincoln "Linc" Evers
| 23 episodes
|-
| 1978
| ''The Adventurous Rangers of the Jungle''
| Charles Cross
| Television film
|-
| rowspan="2" | 1979
| ''[[The Muppets Go Hollywood]]''
| Himself
| Television special
|-
| ''[[Undercover with the KKK]]''
| Narrator
| Television film
|-
| 1980
| ''[[The Love Boat]]''
| Bret Garrett
| Episode: "The Horse Lover/Secretary to the Stars/Julie's Decision/Gopher and Isaac Buy a Horse/Village People Ride Again"
|-
| 1981–1982
| ''[[Strike Force (TV series)|Strike Force]]''
| Captain Frank Murphy
| 20 episodes
|-
| rowspan="2" | 1984
| ''[[Hotel (American TV series)|Hotel]]''
| Lewis Blackwood
| Episode: "The Wedding"
|-
| ''[[George Washington (miniseries)|George Washington]]''
| General Stark
| 3 episodes<br />Television miniseries
|-
| rowspan="4" | 1985
| ''[[Brothers (1984 TV series)|Brothers]]''
| Russell Maltby
| Episode: "Donald's Dad"
|-
| ''[[Hotel (American TV series)|Hotel]]''
| Charles Vandoor
| Episode: "New Beginnings"
|-
| ''[[Hollywood Wives (miniseries)|Hollywood Wives]]''
| George Lancaster
| 3 episodes,<br />Television miniseries
|-
| ''Midas Valley''
| Drew Hammond
| Television film
|-
| 1986
| ''[[Murder, She Wrote]]''
| Chester Harrison
| Episode: "Christopher Bundy – Died on Sunday"
|-
| 1987
| ''[[Falcon Crest]]''
| Roland Saunders
| 5 episodes
|-
| 1987–2002
| ''[[Unsolved Mysteries]]''
| Host
| 292 episodes
|-
| rowspan="2" | 1987
| ''Perry Mason: The Case of the Sinister Spirit''
| Jordan White
| rowspan="2" | Television film
|-
| ''Korea: The Forgotten War''
| Narrator
|-
| 1990
| ''[[The Fanelli Boys]]''
| Kyle Hadley
| Episode: "A Very Fanelli Christmas"
|-
| rowspan="2" | 1991
| ''The Real Story of...''
| Lt. Littleboy / Narrator
| Voice, episode: "Baa Baa Black Sheep"<ref name="btva" />
|-
| ''The Return of Eliot Ness''
| Eliot Ness
| Television film
|-
| 1993
| ''[[Blossom (American TV series)|Blossom]]''
| Robert Stack
| Episode: "Sitcom"
|-
| 1995
| ''The Pinocchio Shop''
| [[George Washington]]
| Episode: "Patriots and Apples"
|-
| 1996
| ''[[JAG (TV series)|JAG]]''
| TV Host
| Episode: "Sightings"
|-
| 1997
| ''[[Diagnosis Murder]]''
| Peter McReynolds
| Episode: "Open and Shut"
|-
| 1998–1999
| ''[[Hercules (1998 TV series)|Hercules]]''
| Bob the Narrator
| Voice, 30 episodes
|-
| rowspan="2" | 1999
| ''[[Recess (TV series)|Recess]]''
| General
| Voice, episode: "A Genius Among Us"
|-
| ''Sealed with a Kiss''
| Sumner Ethridge
| Television film
|-
| rowspan="4" | 2000
| ''[[Star Trek: Voyager]]''
| Eliot Ness
| Episode: "Memorial"
|-
| ''The Lords of the Mafia''
| Himself
| Documentary
|-
| ''[[The Angry Beavers]]''
| Narrator
| Voice, episode: "Home Loners"
|-
| ''H.U.D.''
| Deep Throat Man
| Television film
|-
| 2001–2003
| ''[[Butt-Ugly Martians]]''
| Stoat Muldoon
| Voice, main role
|-
| 2001
| ''[[King of the Hill]]''
| Reynolds Penland
| Voice, episode: "The Trouble with Gribbles"; uncredited
|-
| 2002
| ''[[Teamo Supremo]]''
| Gordon / The Silver Shield
| Voice, episode: "The Grandfather Show"
|}