Virile Brooklyn-born actor Harry Guardino, with dark, wavy hair and a perpetual worried look on his craggy-looking mug, started out in the acting school of hard knocks, slumming for nearly a decade in small, obscure 'tough guy' film parts in the early to mid 50s. A definite man's man, he finally attracted some attention on the Broadway stage with ...
| Title | Year | Status | Character |
|---|
| Fist of Honor | 1993 | Dino Diamond |
| Murder, She Wrote | 1984-1993 | TV Series | Haskell Drake / Danny Cochran / Lt. Floyd Novack |
| Renegade | 1992 | TV Series | Karl Swenson |
| Human Target | 1992 | TV Series | Judge Schlosser |
| Cheers | 1992 | TV Series | Frank Carpaccio |
| Under Surveillance | 1991 | Ben Hirsch |
| P.S.I. Luv U | 1991 | TV Series | Hilyard |
| The Neon Empire | 1991 | TV Movie | Nick |
| Jake and the Fatman | 1991 | TV Series | Jake Styles Sr. |
| Hunter | 1989 | TV Series | Bill Ryan |
| Alfred Hitchcock Presents | 1988 | TV Series | Phil Mansfield |
| The Law and Harry McGraw | 1987 | TV Series | Spinelli |
| Adderly | 1987 | TV Series |
| Hotel | 1985-1986 | TV Series | Al Shafer / Vincent Palandrini |
| On Our Way | 1985 | TV Movie | Sam Walsh |
| Jessie | 1984 | TV Series | King Raymond |
| Lovers and Other Strangers | 1982 | TV Series | Frank Delvecchio |
| Vega$ | 1981 | TV Series | John Varga |
| The Sophisticated Gents | 1981 | TV Series | Vice Detective Collins |
| Any Which Way You Can | 1980 | James Beekman |
| Barnaby Jones | 1980 | TV Series | Walt W. DiAngelo |
| Hawaii Five-O | 1969-1979 | TV Series | Johnny Mio / Commander Wallace / Mike Martin / ... |
| Goldengirl | 1979 | Valenti |
| Pleasure Cove | 1979 | TV Movie | Bert Harrison |
| Bender | 1979 | TV Series |
| Every Which Way But Loose | 1978 | James Beekman (uncredited) |
| Evening in Byzantium | 1978 | TV Movie | Jerry Olson |
| Matilda | 1978 | Uncle Nono |
| No Margin for Error | 1978 | TV Movie |
| Police Story | 1973-1978 | TV Series | Lt. William Bramlett / Sergeant Keitlinger / Di Marco / ... |
| Wonder Woman | 1978 | TV Series | Simon Penrose |
| Fantasy Island | 1978 | TV Series | NYPD Detective Captain John Burke |
| Contract on Cherry Street | 1977 | TV Movie | Ron Polito |
| Rollercoaster | 1977 | Keefer |
| Future Cop | 1977 | TV Series | Brad Bannock |
| The Enforcer | 1976 | Lt. Bressler |
| The Streets of San Francisco | 1976 | TV Series | Ben Jarris |
| Having Babies | 1976 | TV Movie | Ralph Bancini |
| Street Killing | 1976 | TV Movie | Al Lanier |
| St. Ives | 1976 | Det. Frank Deal |
| Good Heavens | 1976 | TV Series | Adam Hastings |
| McCoy | 1975 | TV Series | Burt Mather |
| Whiffs | 1975 | Chops Mulligan |
| Capone | 1975 | Johnny Torrio |
| The Manhunter | 1974 | TV Series | Bert Heideman |
| The Evil Touch | 1973-1974 | TV Series | Dr. Brad Fenton / Mark Harper |
| Kojak | 1974 | TV Series | Det. Benny Fiore |
| Get Christie Love! | 1974 | TV Series | Capt. Casey Reardon |
| The New Perry Mason | 1973-1974 | TV Series | Hamilton Burger |
| Indict and Convict | 1974 | TV Movie | Mel Thomas |
| The Wide World of Mystery | 1973 | TV Series |
| Partners in Crime | 1973 | TV Movie | Walt Connors |
| McCloud | 1973 | TV Series | Sgt. Edward Toomey |
| They Only Kill Their Masters | 1972 | Capt. Daniel Streeter |
| Medical Center | 1972 | TV Series | Dr. Rubinstein |
| Night Gallery | 1972 | TV Series | Charlie Rogan (segment "The Miracle at Camafeo") |
| Slingshot | 1971 |
| Dirty Harry | 1971 | Bressler |
| Monty Nash | 1971 | TV Series | Monty Nash |
| The Last Child | 1971 | TV Movie | Howard Drumm |
| Red Sky at Morning | 1971 | Romeo Bonino |
| Love, American Style | 1971 | TV Series | Harry Watkins (segment "Love and the Housekeeper") |
| The Name of the Game | 1968-1971 | TV Series | Dr. Grabaldi / Raul Oliva |
| Men at Law | 1971 | TV Series |
| The F.B.I. | 1970 | TV Series | Al Eubanks |
| Lovers and Other Strangers | 1970 | Johnny |
| The Lonely Profession | 1969 | TV Movie | Leo Gordon |
| The Hell with Heroes | 1968 | Lee Harris |
| Jigsaw | 1968 | Arthur Belding |
| Madigan | 1968 | Det. Rocco Bonaro |
| Valley of Mystery | 1967 | TV Movie | Danny O'Neill |
| The Adventures of Bullwhip Griffin | 1967 | Sam Trimble |
| The Treasure of San Gennaro | 1966 | Jack |
| Run for Your Life | 1966 | TV Series | Enzo |
| 12 O'Clock High | 1966 | TV Series | Capt. Barney Deel |
| The Virginian | 1965 | TV Series | Sam Willock |
| The Reporter | 1964 | TV Series | Danny Taylor |
| Rhino! | 1964 | Alec Burnett |
| Ben Casey | 1964 | TV Series | Dr. M.V. Halloran |
| Bob Hope Presents the Chrysler Theatre | 1963 | TV Series | Rick |
| The Outer Limits | 1963 | TV Series | Major Roger Brothers
Dr. James Hamilton |
| The Greatest Show on Earth | 1963 | TV Series | James Paleski |
| Naked City | 1959-1963 | TV Series | Ben Giovanni / Johnny Mills |
| The Eleventh Hour | 1963 | TV Series | Dave Porter / Foley Adams |
| Route 66 | 1962 | TV Series | Muddy Mullins |
| Alcoa Premiere | 1962 | TV Series | Sergeant Lee Arthur |
| Dr. Kildare | 1962 | TV Series | Gerald Hastings |
| The Dick Powell Theatre | 1962 | TV Series | Joe Maglie |
| The Lloyd Bridges Show | 1962 | TV Series | Demetrios |
| The United States Steel Hour | 1962 | TV Series |
| Kraft Mystery Theater | 1962 | TV Series | Paul conrad |
| Hell Is for Heroes | 1962 | Sgt. Larkin |
| The Pigeon That Took Rome | 1962 | Sgt. Joseph Angelico |
| The Untouchables | 1960-1962 | TV Series | Johnny Templar / Nick Moses / Frank O'Dean |
| Cain's Hundred | 1962 | TV Series | John Maychin |
| Target: The Corruptors | 1962 | TV Series | Rick Manet |
| King of Kings | 1961 | Barabbas |
| Checkmate | 1961 | TV Series | Griff Nolan |
| Overland Trail | 1960 | TV Series | Johnny Caldwell |
| 5 Branded Women | 1960 | Branco |
| Johnny Staccato | 1959 | TV Series | Franky Aspen |
| The Five Pennies | 1959 | Tony Valani |
| Playhouse 90 | 1957-1959 | TV Series | Neri / Lt. Michael Largo |
| Pork Chop Hill | 1959 | Pvt. Forstman |
| Westinghouse Desilu Playhouse | 1959 | TV Series | Paul Conrad |
| Houseboat | 1958 | Angelo Donatello |
| Suspicion | 1958 | TV Series | Larry |
| Kraft Theatre | 1958 | TV Series |
| Studio 57 | 1957 | TV Series | Tony Sanbom |
| Alfred Hitchcock Presents | 1957 | TV Series | Gerry Daniels |
| The Millionaire | 1957 | TV Series | Roy Delbridge |
| Schlitz Playhouse | 1957 | TV Series | Bill Hungerford |
| Studio One in Hollywood | 1957 | TV Series | Carmen Fiore |
| The Kaiser Aluminum Hour | 1957 | TV Series | Paul Sandor |
| The Court Jester | 1955 | Forester (uncredited) |
| Hold Back Tomorrow | 1955 | Detective |
| I Married Joan | 1955 | TV Series | Officer Brannigan |
| The Big Tip Off | 1955 | Hood #2 |
| I Led 3 Lives | 1955 | TV Series | Duncan |
| Son of Ali Baba | 1952 | Hamid, Ali's Cadet Friend (uncredited) |
| Flesh and Fury | 1952 | Lou Callan - Paul's Brother |
| Dangerous Assignment | 1952 | TV Series | Enrico / Emilio Ruiz |
| Purple Heart Diary | 1951 | Lt. Roberts |
| Sirocco | 1951 | Lt. Collet (uncredited) |
| Up Front | 1951 | Orderly (uncredited) |
