 | Carl Low | ... | Peter Bresniwycz / ... (11 episodes, 1957-1963) |
 | William Prince | | (10 episodes, 1951-1958) |
 | Philip Abbott | ... | George Kovaks / ... (9 episodes, 1954-1963) |

| Ed Begley | | (8 episodes, 1950-1955) |

| Val Avery | ... | Gino Dovelli / ... (8 episodes, 1956-1963) |

| Leslie Nielsen | | (7 episodes, 1951-1953) |
 | Bibi Osterwald | ... | Mrs. Arnquist / ... (7 episodes, 1953-1961) |
 | Kent Smith | ... | Dr. Alberto Gainza Paz / ... (6 episodes, 1951-1957) |
 | Kathleen Maguire | ... | Susan (6 episodes, 1955-1959) |
 | Alexander Scourby | ... | Abraham Rothstein / ... (6 episodes, 1956-1963) |
 | Simon Oakland | | (6 episodes, 1957-1960) |
 | Vaughn Taylor | ... | Jonesy / ... (5 episodes, 1950-1956) |
 | Biff McGuire | ... | Bob Gorman / ... (5 episodes, 1951-1957) |
 | William Redfield | ... | Ferenc Iszak (5 episodes, 1952-1963) |
 | Joe Maross | ... | Mr. Robertshaw (5 episodes, 1952-1957) |
 | Martin E. Brooks | ... | The priest (5 episodes, 1953-1960) |
 | Leora Dana | ... | Ruth (5 episodes, 1953-1956) |

| Frank Overton | ... | Mr. Arnquist / ... (5 episodes, 1954-1957) |

| William Smithers | | (5 episodes, 1955-1963) |
 | Harry Townes | ... | Dr. Bowers / ... (5 episodes, 1955-1960) |
 | Patrick McVey | ... | Junkie (5 episodes, 1956-1963) |

| Patty Duke | ... | Angelina / ... (5 episodes, 1956-1959) |
 | James Broderick | | (5 episodes, 1957-1963) |
 | Fred J. Scollay | ... | Arch Saylor / ... (5 episodes, 1958-1961) |
 | Judith Evelyn | | (4 episodes, 1950-1955) |
 | Enid Markey | | (4 episodes, 1950-1954) |
 | Edmon Ryan | ... | Colonel (4 episodes, 1951-1961) |
 | Hildy Parks | | (4 episodes, 1951-1953) |
 | Wesley Addy | | (4 episodes, 1952-1963) |

| E.G. Marshall | | (4 episodes, 1952-1955) |
 | Hugh Reilly | ... | Fred (4 episodes, 1953-1957) |
 | Fay Bainter | | (4 episodes, 1953-1955) |

| Carmen Mathews | | (4 episodes, 1954-1961) |
 | Lori March | | (4 episodes, 1955-1963) |
 | Frank Aletter | ... | Norquest (4 episodes, 1955-1961) |
 | Larry Gates | ... | Douglas MacDonald (4 episodes, 1956-1960) |
 | Nancy Wickwire | | (4 episodes, 1958-1962) |
 | Joseph Leon | ... | Junkie (4 episodes, 1960-1963) |
 | Olive Deering | ... | Elsa / ... (4 episodes, 1960-1962) |

| Ron Thompson | ... | Junkie / ... (4 episodes, 1962-1963) |
 | Stuart Erwin | | (3 episodes, 1950-1962) |

| Dort Clark | ... | Dawson (3 episodes, 1950-1961) |
 | Laurence Hugo | | (3 episodes, 1950-1960) |
 | Louise Allbritton | | (3 episodes, 1950-1952) |
 | Ruth Matteson | | (3 episodes, 1950-1951) |
 | Frances Reid | ... | Eve Banner (3 episodes, 1951-1963) |
 | Jerome Cowan | | (3 episodes, 1951-1957) |
 | Constance Ford | ... | Mrs. Muir (3 episodes, 1951-1956) |
 | Margaret Hayes | | (3 episodes, 1951-1955) |
 | Mel Ruick | | (3 episodes, 1951-1953) |
 | Henry Hull | | (3 episodes, 1951-1952) |

| Grace Kelly | | (3 episodes, 1951-1952) |
 | Andy Milligan | | (3 episodes, 1951-1952) |
 | John Newland | | (3 episodes, 1951-1952) |
 | Barbara Baxley | | (3 episodes, 1952-1962) |
 | James Daly | | (3 episodes, 1952-1962) |
 | Shepperd Strudwick | | (3 episodes, 1952-1962) |

| Darren McGavin | ... | Carl Broggi / ... (3 episodes, 1952-1956) |
 | Anne Seymour | ... | Mrs. Muir (3 episodes, 1952-1956) |
 | Luis Van Rooten | ... | Mr. Etzl (3 episodes, 1952-1956) |

| Walter Matthau | | (3 episodes, 1952-1954) |
 | Staats Cotsworth | ... | Knowlton (3 episodes, 1953-1961) |
 | Dennis Patrick | ... | Magistrate / ... (3 episodes, 1953-1957) |
 | Mary Fickett | ... | Nurse Sally Lacey (3 episodes, 1953-1956) |
 | Jackie Cooper | ... | Larry (3 episodes, 1953-1955) |
 | Jessie Royce Landis | | (3 episodes, 1953-1955) |
 | Maxine Stuart | ... | Anne (3 episodes, 1954-1957) |
 | June Dayton | ... | Eleanor / ... (3 episodes, 1955-1957) |
 | Bert Freed | ... | Janos (3 episodes, 1955-1957) |
 | John Cameron Swayze | ... | Narrator / ... (3 episodes, 1955-1957) |
 | Patricia Collinge | | (3 episodes, 1955-1956) |
 | Georgann Johnson | ... | Mrs. Nelson (3 episodes, 1955-1956) |
 | John Cassavetes | | (3 episodes, 1955) |
 | Gerald Sarracini | ... | Polyak / ... (3 episodes, 1956-1957) |
 | Frank Marth | ... | Mac / ... (3 episodes, 1957-1961) |
 | Addison Powell | ... | Coates / ... (3 episodes, 1957-1961) |
 | Joan Copeland | ... | Mrs. Hermann (3 episodes, 1957-1960) |
 | David White | ... | Magistrate (3 episodes, 1957-1959) |

| Michael Constantine | ... | Committee Chairman / ... (3 episodes, 1958-1961) |

| James Mitchell | | (3 episodes, 1958-1960) |
 | Vincent Gardenia | | (3 episodes, 1959-1963) |
 | John L. McClellan | | (3 episodes, 1959-1963) |
 | Frank Sutton | | (3 episodes, 1959-1963) |

| Conrad Janis | ... | Eddie Velasquez (3 episodes, 1959-1960) |

| Telly Savalas | ... | Wisliceny (3 episodes, 1959-1960) |

| George Segal | | (3 episodes, 1960-1962) |

| Carroll O'Connor | ... | Doc Turner / ... (3 episodes, 1960-1961) |
 | Kevin McCarthy | ... | Neil Draper (3 episodes, 1961-1962) |
 | Vince O'Brien | ... | Father / ... (3 episodes, 1961-1962) |
 | Paul Sparer | ... | Lt. Fred Ames / ... (3 episodes, 1961) |

| Dabney Coleman | ... | Junkie (3 episodes, 1962-1963) |
 | James Dimitri | ... | Junkie (3 episodes, 1962-1963) |
 | Edmund Gaynes | | (3 episodes, 1962-1963) |

| Gene Lockhart | ... | Pat (2 episodes, 1953-1954) |

| Tige Andrews | ... | Sam (2 episodes, 1952-1953) |
 | Paul McGrath | ... | Andrew (2 episodes, 1950-1961) |
 | Frank Albertson | | (2 episodes, 1950-1957) |
 | Valerie Cossart | | (2 episodes, 1950-1954) |

| Otto Kruger | | (2 episodes, 1950-1954) |

| Nina Foch | | (2 episodes, 1950-1953) |
 | Ruth Ford | | (2 episodes, 1950-1953) |
 | Richard Bishop | | (2 episodes, 1950-1952) |
 | Betty Lou Keim | | (2 episodes, 1950-1952) |
 | Romney Brent | | (2 episodes, 1950-1951) |
 | Barbara Britton | | (2 episodes, 1950-1951) |
 | Richard Derr | | (2 episodes, 1950-1951) |
 | Lawrence Fletcher | | (2 episodes, 1950-1951) |
 | Charles Mendick | | (2 episodes, 1950-1951) |
 | Lucile Watson | | (2 episodes, 1950-1951) |
 | Donald Woods | | (2 episodes, 1950-1951) |
 | Lonny Chapman | ... | Richard McIntyre (2 episodes, 1951-1962) |
 | Jay Barney | | (2 episodes, 1951-1959) |

| Jonathan Harris | ... | Von Braun (2 episodes, 1951-1957) |

| Vilma Kurer | ... | Eve (2 episodes, 1951-1957) |
 | Robert Pastene | ... | Michaels (2 episodes, 1951-1956) |

| Geraldine Fitzgerald | | (2 episodes, 1951-1955) |
 | John Archer | | (2 episodes, 1951-1954) |
 | Sidney Blackmer | | (2 episodes, 1951-1954) |
 | Skip Homeier | | (2 episodes, 1951-1954) |
 | Geraldine Brooks | | (2 episodes, 1951-1953) |

| Jack Lemmon | | (2 episodes, 1951-1953) |
 | Ben Cooper | | (2 episodes, 1951-1952) |
 | John Hamilton | | (2 episodes, 1951-1952) |
 | Anne Jackson | ... | Lena (2 episodes, 1951-1952) |
 | Muriel Kirkland | | (2 episodes, 1951-1952) |
 | Bunny Lewbel | | (2 episodes, 1951-1952) |
 | Beverly Whitney | | (2 episodes, 1951-1952) |
 | Beatrice Pearson | | (2 episodes, 1951) |
 | Michael Gorrin | ... | Colonel Petrov (2 episodes, 1952-1956) |
 | Richard Kendrick | | (2 episodes, 1952-1954) |
 | E.A. Krumschmidt | | (2 episodes, 1952-1954) |
 | Jack Whiting | | (2 episodes, 1952-1954) |
 | Glenda Farrell | | (2 episodes, 1952-1953) |
 | Pat Crowley | | (2 episodes, 1952) |
 | Edgar Stehli | | (2 episodes, 1952) |
 | Frederic Tozere | | (2 episodes, 1952) |
 | Murray Hamilton | ... | Keith Roman (2 episodes, 1953-1963) |
 | Betsy Palmer | | (2 episodes, 1953-1955) |
 | Ernest Truex | | (2 episodes, 1953-1955) |
 | Jo Van Fleet | | (2 episodes, 1953-1955) |
 | Larry Blyden | | (2 episodes, 1953-1954) |
 | Patricia Breslin | | (2 episodes, 1953-1954) |
 | Wallace Ford | | (2 episodes, 1953-1954) |
 | James Gregory | | (2 episodes, 1953-1954) |

| Elizabeth Montgomery | ... | Ellen Craig (2 episodes, 1953-1954) |
 | Mildred Natwick | | (2 episodes, 1953-1954) |
 | Melville Cooper | | (2 episodes, 1953) |
 | Lili Darvas | | (2 episodes, 1953) |
 | Louisa Horton | | (2 episodes, 1953) |
 | Kevin Coughlin | ... | Larry (2 episodes, 1954-1962) |
 | Carol Bruce | | (2 episodes, 1954-1957) |
 | Patricia Smith | ... | Helen Gorman (2 episodes, 1954-1957) |
 | Walter Brooke | ... | Boland (2 episodes, 1954-1956) |
 | Mildred Dunnock | | (2 episodes, 1954-1955) |

| Catherine McLeod | | (2 episodes, 1954-1955) |
 | Joseph Walsh | | (2 episodes, 1954-1955) |

| Fredd Wayne | | (2 episodes, 1954-1955) |
 | Arthur Treacher | | (2 episodes, 1954) |
 | Peter Cookson | | (2 episodes, 1955-1957) |
 | Hurd Hatfield | | (2 episodes, 1955-1957) |

| Jack Klugman | | (2 episodes, 1955-1956) |

| Peter Mark Richman | | (2 episodes, 1955-1956) |

| Maureen Stapleton | ... | Mrs. Elizabeth Steigerwald (2 episodes, 1955-1956) |
 | Audra Lindley | ... | Mrs. Hyde (2 episodes, 1956-1963) |
 | John Kellogg | | (2 episodes, 1956-1957) |

| Peggy McCay | ... | Mrs. Robertshaw (2 episodes, 1956-1957) |
 | Lois Wheeler | ... | Mrs. Rico (2 episodes, 1956-1957) |
 | Bruce Gordon | ... | Arthur Henry Moline / ... (2 episodes, 1957-1963) |
 | Eva Soreny | ... | Anna Percelz (2 episodes, 1957) |
 | Robert Drivas | | (2 episodes, 1958-1960) |
 | Lois Nettleton | | (2 episodes, 1958) |
 | William Post Jr. | | (2 episodes, 1958) |
 | Norman Rose | | (2 episodes, 1958) |

| Robert Duvall | ... | Berks (2 episodes, 1959-1960) |
 | Peter von Zerneck | | (2 episodes, 1960-1962) |
 | Harry Millard | | (2 episodes, 1960-1961) |
 | Donald Briggs | | (2 episodes, 1960) |
 | Del Close | ... | Ringo Cat (2 episodes, 1960) |
 | Stephen Elliott | ... | Joe Romero (2 episodes, 1960) |
 | John Lasell | ... | Jamie McGann (2 episodes, 1960) |
 | Lydia Bruce | ... | Malcha Rothstein (2 episodes, 1961-1962) |
 | Anne Hegira | ... | Emma / ... (2 episodes, 1961-1962) |
 | James Olson | ... | Allen Menkin / ... (2 episodes, 1961-1962) |
 | Barbara Barrie | ... | Joanna Sommers (2 episodes, 1961) |
 | Arthur Hill | | (2 episodes, 1961) |
 | Rosemary Murphy | ... | Claire Draper (2 episodes, 1961) |
 | Lori Nelson | | (2 episodes, 1961) |
 | Alfred Hinckley | ... | Fred Lawrence (2 episodes, 1962-1963) |
 | Tim O'Connor | | (2 episodes, 1962-1963) |
 | Zia Mohyeddin | | (2 episodes, 1963) |
 | Joseph Warren | ... | Jordan (2 episodes, 1963) |
|
 | Nelson Case | ... | Host / ... (unknown episodes, 1950-1951) |
 | Joe Ripley | ... | Host / ... (unknown episodes, 1952-1953) |
 | Bob Sherry | ... | Host / ... (unknown episodes, 1953-1954) |
 | Sandy Becker | ... | Host / ... (unknown episodes, 1954-1955) |
 | Douglas Edwards | ... | Host / ... (unknown episodes, 1957-1961) |
 | Ron Cochran | ... | Host / ... (unknown episodes, 1961-1962) |
 | Henry Hamilton | ... | Host / ... (unknown episodes, 1962-1963) |