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| Año | Título | Personaje | Valoración |
|---|---|---|---|
| 1993 | La doctora Quinn | ★★★★☆ | |
| 1992 | La novia del candidato | Headwaiter | ★★★☆☆ |
| 1991 | Misión Tiburón | Charles McVay Sr. | ★★★☆☆ |
| 1991 | Fatal Friendship | Pop | ☆☆☆☆☆ |
| 1990 | Pretty Woman | Senator Adams | ★★★★☆ |
| 1990 | False Identity | Irving Campbell | ★★★☆☆ |
| 1988 | Las pesadillas de Freddy | George Teller | ★★★★☆ |
| 1987 | Ultraman: The Adventure Begins | Walter Freeman | ★★★★☆ |
| 1986 | Armados y peligrosos | Judge | ★★★☆☆ |
| 1986 | Matlock | ★★★★☆ | |
| 1986 | Teen Wolf | Grandpa Howard (voice) | ★★★★☆ |
| 1985 | Más allá de los límites de la realidad | Elderly Man | ★★★★☆ |
| 1983 | Lies | Uncle Charles | ★★★☆☆ |
| 1983 | Beauty and the Beast | Merchant / Sailor / Male Voice (voice) | ★★★☆☆ |
| 1982 | Superstition | Rev. Maier | ★★★☆☆ |
| 1982 | St. Elsewhere | ★★★☆☆ | |
| 1981 | Sábado 14 | Attorney | ★★☆☆☆ |
| 1981 | Dinastía | ★★★☆☆ | |
| 1981 | Falcon Crest | ★★★☆☆ | |
| 1981 | Mr. Merlin | ★★☆☆☆ | |
| 1980 | The $5.20 an Hour Dream | Bar Drinker | ☆☆☆☆☆ |
| 1980 | Fighting Back: The Story of Rocky Bleier | Draft Board Chairman | ★★★☆☆ |
| 1979 | Knots Landing | ★★★☆☆ | |
| 1979 | Buck Rogers: El aventurero del espacio | Senior Officer | ★★★☆☆ |
| 1978 | The Clone Master | Admiral Millus | ★★★☆☆ |
| 1978 | Little Mo | Chamber of Commerce President | ★★★★☆ |
| 1978 | The Pirate | Man at Ball | ★★★☆☆ |
| 1977 | Hormigas | Doc | ★★☆☆☆ |
| 1977 | The November Plan | Jerry Seever | ☆☆☆☆☆ |
| 1977 | El increíble Hulk | Tim Roark | ★★★★☆ |
| 1976 | Kingston | Dr. Eberly | ☆☆☆☆☆ |
| 1976 | Quincy, M.E. | ★★★★☆ | |
| 1975 | The Desperate Miles | Mr. Rhodes | ☆☆☆☆☆ |
| 1975 | Baretta | ★★★☆☆ | |
| 1974 | El último testigo | Commission Spokesman #1 | ★★★☆☆ |
| 1974 | Harry O | ★★☆☆☆ | |
| 1974 | Los casos de Rockford | Sy Mosher | ★★★★☆ |
| 1974 | Los casos de Rockford | Reverend | ★★★★☆ |
| 1973 | Detroit 9000 | ★★★☆☆ | |
| 1973 | Kojak | Mr. Sperry | ★★★☆☆ |
| 1973 | Hawkins | Dr. Wyatt | ★★★★☆ |
| 1971 | Vanished | Gov. Wolcott | ★★★☆☆ |
| 1968 | Área 12 | Tom Holmes | ★★★★☆ |
| 1968 | Área 12 | Mr. Barker | ★★★★☆ |
| 1967 | Johnny Belinda | Dr. Grey | ☆☆☆☆☆ |
| 1967 | Mannix | ★★★☆☆ | |
| 1967 | He & She | Jack Moss | ★★☆☆☆ |
| 1965 | The F.B.I. | Bank Manager | ★★★☆☆ |
| 1961 | The Dick Van Dyke Show | ★★★★☆ | |
| 1959 | FBI Contra El Imperio Del Crimen | Machine Gun Kelly (uncredited) | ★★★☆☆ |
| 1958 | Joy Ride | Wechsler | ★★★☆☆ |
| 1958 | 77 Sunset Strip | ★★★☆☆ | |
| 1957 | Grandes horizontes | Rebel in Livery Stable (uncredited) | ★★★☆☆ |
| 1957 | Perry Mason | Police Lt. Gibson | ★★★★☆ |
| 1957 | Maverick | Sheriff | ★★★☆☆ |
| 1957 | Sugarfoot | Jed Hammer | ★★☆☆☆ |
| 1957 | Perry Mason | Judge | ★★★★☆ |
| 1956 | Corrective Penalization | Traffic Courtroom Judge | ☆☆☆☆☆ |
| 1956 | Procedure in the Traffic Courtroom | Traffic Courtroom Judge | ☆☆☆☆☆ |
| 1956 | Court Business Administration | Traffic Courtroom Judge | ☆☆☆☆☆ |
| 1956 | The Traffic Problem | Traffic Courtroom Judge | ☆☆☆☆☆ |
| 1955 | Cheyenne | Sergeant O'Bannion | ★★★☆☆ |
| 1955 | Navy Log | ★★☆☆☆ | |
| 1952 | Cavalcade of America | Warren Andrews | ★★☆☆☆ |
| 1943 | The Hard Way | First Theatrical Agent in Montage (Uncredited) | ★★★☆☆ |
Películas destacadas de Stacy Keach, Sr.
Estas son las películas más destacadas en las que ha trabajdo:
