| Year | Title | Role | Notes |
| 1950 | The Silver Theater | Tim Davis | Season 1 Episode 32: "Lady with Ideas" |
| 1951 | Pulitzer Prize Playhouse | George Callahan | Season 1 Episode 15: "Ned McCobb's Daughter" |
| The Bigelow Theatre | | Season 1 Episode 6: "Rewrite for Love" |
| 1953 | Robert Montgomery Presents | Tony Marino | Season 5 Episode 8: "The Sunday Punch" |
| Schlitz Playhouse of Stars | Jimmy Sampson | Season 3 Episode 16: "Part of the Game" |
| 1954 | Producers' Showcase | Simon Gayforth | Season 1 Episode 1: "Tonight at 8:30" (Segment: "Shadow Play") |
| Lux Video Theatre | | Season 5 Episode 13: "Captive City" |
| 1955–1956 | Warner Brothers Presents | Host | 36 episodes |
| 1956 | The United States Steel Hour | Dave Corman | Season 4 Episode 3: "Sauce for the Goose" |
| 1957 | Climax! | Edgar Holt | Season 4 Episode 1: "Jacob and the Angels" |
| Studio One | Philip Adams / Alan Fredericks | Season 10 Episode 23: "A Dead Ringer" |
| 1958 | Goodyear Theatre | Herman Worth | Season 2 Episode 3: "The Spy" |
| 1959 | The Twilight Zone | Martin Sloan | Season 1 Episode 5: "Walking Distance" |
| The Philadelphia Story | Dexter Haven | Television film |
| 1960 | Ninotchka | Leon Dolga | Television film |
| Shirley Temple's Storybook | Miles Hendon | Season 2 Episode 7: "The Prince and the Pauper" |
| 1961 | The Spiral Staircase | Stephen Warren | Television film |
| 1962 | The Alfred Hitchcock Hour | John 'Jack Duke' Marsden | Season 1 Episode 1: "A Piece of the Action" |
| 1963 | Kraft Suspense Theatre | Hugo Myrich | Season 1 Episode 3: "The End of the World, Baby" |
| 1964–1965 | The Rogues | Tony Fleming | 22 episodes |
| 1965 | The Andy Williams Show | Himself | 1 episode |
| 1968 | Companions in Nightmare | Eric Nicholson | Television film |
| 1971 | The Neon Ceiling | Jones | Television filmNominated – Primetime Emmy Award for Outstanding Single Performance by an Actor in a Leading Role |
| 1974 | The Great Ice Rip-Off | Harkey Rollins | Television film |
| 1975 | John O'Hara's Gibbsvillea.k.a. The Turning Point of Jim Malloy | Ray Whitehead | Television film |
| 1976 | McCloud | Jack Haferman | Season 6 Episode 6: "The Day New York Turned Blue" |
| Sherlock Holmes in New York | Mortimer McGrew | Television film |
| 1976–1977 | Gibbsville | Ray Whitehead | 13 episodes |
| 1977 | Spectre | Dr. Amos "Ham" Hamilton | Television film |