| • Richard Deacon | played | Mel Cooley / Melvin Cooley / Melvin "Mel" Cooley | 61 Episodes |
| • Jerry Paris | played | Jerry Helper / Mr. Thompson / Exercise show host | 34 Episodes |
| • Ann Morgan Guilbert | played | Millie Helper | 27 Episodes |
| • Carl Reiner | played | Rob Petrie / Yale Sampson / Alan Brady / TV Defense Lawyer / Serge Carpetna / Willie Cook / Horror movie victim / Emcee | 20 Episodes |
| • Frank Adamo | played | Customer / Singing Telegram Man / Delivery Man / Dry Cleaning Man / H. Fieldstone Thorley / veterinarian's assistant / headwaiter / Nervous witness / Waiter / Delivery Boy | 10 Episodes |
| • Jerry Hausner | played | Vinny the Milkman / Charlie the Laundry Man / stage manager / Mr. Fletcher / Delivery Man / Herbie | 6 Episodes |
| • Herbie Faye | played | cabdriving juror / Willie the Coffee Man / Willie the Deli Man / deli man / Vendor | 5 Episodes |
| • Allan Melvin | played | Guard Jenkins / Sam Pomerantz / Harrison B. Harding / Sam / Gun Drummer | 5 Episodes |
| • Ray Kellogg | played | doctor / Captain / Corporal / Bidder's husband / Policeman | 5 Episodes |
| • Amzie Strickland | played | Maternity Nurse / Bidder / Aunt Mildred / Mrs. Carp | 4 Episodes |
| • Dabbs Greer | played | Defense Lawyer Berger / Chaplain / Mr. Brumley | 4 Episodes |
| • Johnny Silver | played | photographer / Waiter / Taxey | 4 Episodes |
| • Eleanor Audley | played | Woman At Party / Mrs. Billings | 4 Episodes |
| • Jerry Van Dyke | played | Stacey Petrie | 4 Episodes |
| • Jamie Farr | played | Charlie the Snappy Service Man | 4 Episodes |
| • Tiny Brauer | played | Cabbie / Louie Parker | 4 Episodes |
| • Herb Vigran | played | juror #2 / Bernie Quinn / Alfred Reinback | 3 Episodes |
| • Arthur Batanides | played | Sheila's date / Bernard / Harry Tinker | 3 Episodes |
| • Ken Lynch | played | Mr. Mathias / Lieutenant Yarnell / Warden Jackson | 3 Episodes |
| • Sandy Kenyon | played | Allergist / doctor / Cox | 3 Episodes |
| • Bill Idelson | played | Bellboy / Herman Glimsher | 3 Episodes |
| • Joan Shawlee | played | Pickles | 3 Episodes |
| • Isabel Randolph | played | Mrs. Bermont / Mrs. Givens / Mrs. Petrie | 3 Episodes |
| • Phil Arnold | played | Anatole / waiter | 2 Episodes |
| • Kathleen Freeman (1) | played | Mrs. Campbell / Maid | 2 Episodes |
| • Peter Leeds | played | Officer Jack Bain / Police Officer | 2 Episodes |
| • Lennie Weinrib | played | Danny Brewster | 2 Episodes |
| • Charles Aidman | played | Glen Jameson / Ed Rubin | 2 Episodes |
| • Marty Ingels | played | Sol Pomeroy / Sol | 2 Episodes |
| • Madge Blake | played | Dodo Parker / lady | 2 Episodes |
| • Howard Wendell | played | Judge George M. Tyler / Dr. Torrance Hayworth | 2 Episodes |
| • Ken Berry | played | Tony Daniels | 2 Episodes |
| • Barbara Perry | played | Pickles Sorrell | 2 Episodes |
| • Roy Roberts | played | Mr. Boland / Henry Bermont | 2 Episodes |
| • Sheldon Leonard | voiced | Floyd B. Bariscale / Max Calvada | 2 Episodes |
| • Jackie Joseph | played | Alberta Schweitzer / Missy | 2 Episodes |
| • Greg Morris | played | Mr. Peters | 2 Episodes |
| • Geraldine Wall | played | Mrs. Meeker / Miss Glasser | 2 Episodes |
| • Mimi Dillard | played | Mrs. Peters | 2 Episodes |
| • Alan Dexter | played | Immigration Officer / Hood | 2 Episodes |
| • John C. Chulay | played | cameraman / Truck Driver | 2 Episodes |
| • Leah Waggner | played | Mrs. Kirk / Martha Goodheart | 2 Episodes |
| • Betty Lou Gerson | played | Mrs. Felicia Fellowes / Hostess | 2 Episodes |
| • Jon Silo | played | Elevator Operator / barber | 2 Episodes |
| • Valerie Yerke | played | Cynthia Harding / Diane Moseby | 2 Episodes |
| • Alfred Ward | played | Guard / Johnson | 2 Episodes |