| Desperado | 1987 | Half Breed | TV Movie |
| The Return of the Six-Million-Dollar Man and the Bionic Woman | 1987 | Kyle (as Robert F. Hoy) | TV Movie |
| Beauty and the Beast | 1987 | Cassut | TV Show |
| A Fine Mess | 1986 | Detective Levine (as Robert Hoy) | Movie |
| Choke Canyon | 1986 | Buck (as Robert Hoy) | Movie |
| Assassin | 1986 | Becker (as Robert Hoy) | TV Movie |
| Houston: The Legend of Texas | 1986 | Col. Burleson (as Robert F. Hoy) | TV Movie |
| Our House | 1986 | Cliff | TV Show |
| North and South, Book I | 1985 | Fighting Man at Station | TV Show |
| Promises to Keep | 1985 | Bud (as Robert Hoy) | TV Movie |
| Airwolf | 1984 | Roper | TV Show |
| Crazy Like a Fox | 1984 | | TV Show |
| The Master | 1984 | Masterson | TV Show |
| Last of the Great Survivors | 1984 | Mugger (as Robert Hoy) | TV Movie |
| Kenny Rogers as The Gambler: The Adventure Continues | 1983 | Juno (as Robert Hoy) | TV Movie |
| Jimmy the Kid | 1982 | 1st Trooper | Movie |
| They Call Me Bruce? | 1982 | N.Y. Bodyguard #1 | Movie |
| The Legend of the Lone Ranger | 1981 | Perlmutter (Cavendish gang) (as Robert Hoy) | Movie |
| Father Murphy | 1981 | Turner | TV Show |
| Simon & Simon | 1981 | Robbins / Muir | TV Show |
| The Fall Guy | 1981 | Deputy / Robert F. Hoy | TV Show |
| Bronco Billy | 1980 | Cowboy at Bar (as Bobby Hoy) | Movie |
| Alcatraz: The Whole Shocking Story | 1980 | Myron Thompson | TV Movie |
| Enos | 1980 | | TV Show |
| Magnum, P.I. | 1980 | Cornell Dye / Paul Scott / Mark Phelps / ... | TV Show |
| 240-Robert | 1979 | Walter | TV Show |
| A Man Called Sloane | 1979 | Brand | TV Show |
| Salvage 1 | 1979 | Jim | TV Show |
| The Dukes of Hazzard | 1979 | Herky | TV Show |
| Steel Cowboy | 1978 | Dixon (as Robert Hoy) | TV Movie |
| The Other Side of Hell | 1978 | Fighter (as Robert Hoy) | TV Movie |
| B.J. and the Bear | 1978 | Officer Kling | TV Show |
| Dallas | 1978 | Detective Howard / Mahoney | TV Show |
| Sword of Justice | 1978 | LeClair | TV Show |
| Vega$ | 1978 | Michael | TV Show |
| Desperate Women | 1978 | Sergeant Mulrooney (as Robert Hoy) | TV Movie |
| Fantasy Island | 1977 | Slim | TV Show |
| Flight to Holocaust | 1977 | Fire Rescue Chief (as Robert Hoy) | TV Movie |
| The Astral Factor | 1976 | Harris (as Robert Hoy) | Movie |
| The Duchess and the Dirtwater Fox | 1976 | Ingersoll | Movie |
| The Enforcer | 1976 | Buchinski (as Robert Hoy) | Movie |
| The Outlaw Josey Wales | 1976 | Second Texas Ranger | Movie |
| Helter Skelter | 1976 | Sgt. Franklin (as Robert Hoy) | TV Show |
| Bert D'Angelo/Superstar | 1976 | Wayne Miller | TV Show |
| City of Angels | 1976 | Barton | TV Show |
| Future Cop | 1976 | Pedestrian Driver | TV Show |
| Most Wanted | 1976 | Marker | TV Show |
| Quincy M.E. | 1976 | Harry Binns | TV Show |
| The Quest | 1976 | Dundee | TV Show |
| Bite the Bullet | 1975 | Lee Christie (as Robert Hoy) | Movie |
| Barbary Coast | 1975 | Sgt. Hatch | TV Show |
| Bronk | 1975 | Britt | TV Show |
| Matt Helm | 1975 | Huntley | TV Show |
| Switch | 1975 | Benny Vinton / The Sheriff | TV Show |
| The Blue Knight | 1975 | Riley / Clip | TV Show |
| Wonder Woman | 1975 | Marty / Norman | TV Show |
| Bank Shot | 1974 | Bank Guard (uncredited) | Movie |
| A Cry in the Wilderness | 1974 | 1st Man | TV Movie |
| Little House on the Prairie | 1974 | Morgan / Fireman / Ben Slick | TV Show |
| Police Woman | 1974 | Rowland | TV Show |
| The Cowboys | 1974 | Idaho Simms | TV Show |
| The Rockford Files | 1974 | Scheib | TV Show |
| The Six Million Dollar Man | 1974 | Talbot / Thug #1 | TV Show |
| Scream Blacula Scream | 1973 | Cop #2 | Movie |
| The Don Is Dead | 1973 | Hood (uncredited) | Movie |
| Barnaby Jones | 1973 | Lee Masters | TV Show |
| Lotsa Luck | 1973 | Mr. Henderson | TV Show |
| Police Story | 1973 | Dep. Anderson / Jimmy | TV Show |
| The Magician | 1973 | Brenner | TV Show |
| The New Perry Mason | 1973 | Moustached Prisoner with Knife | TV Show |
| Toke | 1973 | | Movie |
| Hec Ramsey | 1972 | Poker Cheat | TV Show |
| Kung Fu | 1972 | Norris / Curry McCoy | TV Show |
| Search | 1972 | Mullins | TV Show |
| The Streets of San Francisco | 1972 | Jackson / Snider's Henchman | TV Show |
| A Man for Hanging | 1972 | Romero (as Robert Hoy) | TV Movie |
| Earth II | 1971 | West | TV Movie |
| Bearcats! | 1971 | Pete | TV Show |
| Cade's County | 1971 | Sergeant Blane | TV Show |
| Cannon | 1971 | Jerry Musso / Auto Shop Employee | TV Show |
| McMillan & Wife | 1971 | Sgt. Delbert Mason | TV Show |
| The Over-the-Hill Gang | 1969 | Frank Mace (as Bobby Hoy) | TV Movie |
| Love, American Style | 1969 | Mad Dog Middleman (segment "Love and the Patrolperson") | TV Show |
| Medical Center | 1969 | Man | TV Show |
| Night Gallery | 1969 | Everett Winterreich (segment "The Hand of Borgus Weems") | TV Show |
| 5 Card Stud | 1968 | Deputy Marshal Otis (uncredited) | Movie |
| The Love Bug | 1968 | Driver (as Robert Hoy) | Movie |
| Hawaii Five-O | 1968 | Rico | TV Show |
| Mod Squad | 1968 | Phillips | TV Show |
| The Outcasts | 1968 | Diaz | TV Show |
| Rogue's Gallery | 1968 | Collins (as Robert Hoy) | Movie |
| Tobruk | 1967 | British Corporal (as Robert Hoy) | Movie |
| Mannix | 1967 | Pike / Thug / Grunyev henchman / ... | TV Show |
| The Guns of Will Sonnett | 1967 | Jo Jo / Macey | TV Show |
| The High Chaparral | 1967 | Joe Butler | TV Show |
| Assault on a Queen | 1966 | Coast Guard Officer (uncredited) | Movie |
| Nevada Smith | 1966 | Tanner / Poker Player (uncredited) | Movie |
| Felony Squad | 1966 | Mullin | TV Show |
| Mission: Impossible | 1966 | Kelso | TV Show |
| Shane | 1966 | Billy Cain | TV Show |
| Star Trek | 1966 | Horta | TV Show |
| The Green Hornet | 1966 | Woody | TV Show |
| Harlow | 1965 | Tim - Unit Manager (uncredited) | Movie |
| The Slender Thread | 1965 | Patrolman Steve Peters (as Robert Hoy) | Movie |
| Tickle Me | 1965 | Henry - Gardener (uncredited) | Movie |
| Branded | 1965 | Grimes - Henchman / Cody Vance | TV Show |
| Get Smart | 1965 | Henchman | TV Show |
| Laredo | 1965 | Willie McCord / Donovan | TV Show |
| The F.B.I. | 1965 | Charlie Kale | TV Show |
| The Wild Wild West | 1965 | Varlet / Henchman / Calico / ... | TV Show |
| The Man from U.N.C.L.E. | 1964 | Claude / Ernst / Thrush Agent / ... | TV Show |
| The Spiral Road | 1962 | Dinner Guest (uncredited) | Movie |
| Combat! | 1962 | G.I. on Radio | TV Show |
| The Virginian | 1962 | Pete | TV Show |
| A.P.O. 923 | 1962 | Corporal Tedderson (as Robert Hoy) | TV Movie |
| The Dick Powell Theatre | 1961 | Officer | TV Show |
| Spartacus | 1960 | Soldier (uncredited) | Movie |
| The Tall Man | 1960 | Fidel | TV Show |
| Dante | 1960 | Lance Hogarth / Ralph | TV Show |
| Operation Petticoat | 1959 | Reiner (as Robert Hoy) | Movie |
| The Big Fisherman | 1959 | Minor Role (uncredited) | Movie |
| The Young Land | 1959 | Cowboy (uncredited) | Movie |
| Black Saddle | 1959 | Al Reece | TV Show |
| Bonanza | 1959 | Little Cowboy / Tom Yancy / Cowboy in Saloon / ... | TV Show |
| Johnny Ringo | 1959 | Joe Bowser | TV Show |
| Laramie | 1959 | Fels | TV Show |
| Law of the Plainsman | 1959 | September Smith | TV Show |
| The Untouchables | 1959 | First Hood | TV Show |
| Lafayette Escadrille | 1958 | Undetermined Role (uncredited) | Movie |
| Live Fast, Die Young | 1958 | Bit Role (uncredited) | Movie |
| No Time for Sergeants | 1958 | Minor Role (uncredited) | Movie |
| Twilight for the Gods | 1958 | Keim (as Robert Hoy) | Movie |
| Bat Masterson | 1958 | Hyde Pierce / Barkeep | TV Show |
| Peter Gunn | 1958 | Ernie Daggett | TV Show |
| Sea Hunt | 1958 | Charlie O'Neil / Convict | TV Show |
| Steve Canyon | 1958 | Sgt. Pete Berger | TV Show |
| The Rifleman | 1958 | Wade's Man / Leroy Dabbs / Lester Boyle | TV Show |
| U.S. Marshal | 1958 | Man | TV Show |
| Wanted: Dead or Alive | 1958 | James | TV Show |
| Four Girls in Town | 1957 | Indian (uncredited) | Movie |
| Man of a Thousand Faces | 1957 | Assistant Director in Bullpen (uncredited) | Movie |
| Tammy and the Bachelor | 1957 | Boy (uncredited) | Movie |
| Have Gun - Will Travel | 1957 | Carpenter | TV Show |
| M Squad | 1957 | Chris | TV Show |
| Maverick | 1957 | Gates | TV Show |
| Tombstone Territory | 1957 | Bar Room Brawler | TV Show |
| Away All Boats | 1956 | Seaman (uncredited) | Movie |
| Gun for a Coward | 1956 | Danny (as Robert Hoy) | Movie |
| Raw Edge | 1956 | Five Crows (uncredited) | Movie |
| The Mole People | 1956 | Mole Person (uncredited) | Movie |
| Zane Grey Theater | 1956 | Deputy / Rider / Sam / ... | TV Show |
| Francis in the Navy | 1955 | Creavy (uncredited) | Movie |
| Kiss of Fire | 1955 | Soldier (uncredited) | Movie |
| One Desire | 1955 | Fireman (uncredited) | Movie |
| Revenge of the Creature | 1955 | Charlie (uncredited) | Movie |
| The Long Gray Line | 1955 | Cadet Kennedy (uncredited) | Movie |
| To Hell and Back | 1955 | Jennings (uncredited) | Movie |
| The Life and Legend of Wyatt Earp | 1955 | Poker Player | TV Show |
| A Star Is Born | 1954 | Soundman (uncredited) | Movie |
| Bengal Brigade | 1954 | Lancer (uncredited) | Movie |
| Saskatchewan | 1954 | Hazen (uncredited) | Movie |
| Taza, Son of Cochise | 1954 | Lobo (as Robert Hoy) | Movie |
| The Black Shield of Falworth | 1954 | First Guard (uncredited) | Movie |
| The Silver Chalice | 1954 | Rioter (uncredited) | Movie |
| December Bride | 1954 | First Man / Boomy | TV Show |
| The Magical World of Disney | 1954 | Sam Carter / Jim / Jim - Ranger #2 / ... | TV Show |
| Border River | 1954 | Sgt. Johnson (uncredited) | Movie |
| Four Guns to the Border | 1954 | Smitty (as Robert Hoy) | Movie |
| Seminole | 1953 | Trooper (uncredited) | Movie |
| The Man from the Alamo | 1953 | Soldier (uncredited) | Movie |
| Wings of the Hawk | 1953 | Soldier (uncredited) | Movie |
| The Lawless Breed | 1952 | Gyp (uncredited) | Movie |
| Death Valley Days | 1952 | Buckley / Trapper | TV Show |
| As You Were | 1951 | Soldier (uncredited) | Movie |
| Ambush | 1950 | Trooper (uncredited) | Movie |
| The Jack Benny Program | 1950 | Policeman | TV Show |
