| Jon Hamm | Don Draper |
| Elisabeth Moss | Peggy Olson |
| Vincent Kartheiser | Pete Campbell |
| January Jones | Betty Draper |
| Christina Hendricks | Joan Harris |
| Bryan Batt | Salvatore Romano
(credit only) |
| Michael Gladis | Paul Kinsey |
| Aaron Staton | Ken Cosgrove |
| Rich Sommer | Harry Crane |
| Robert Morse | Bertram Cooper |
| John Slattery | Roger Sterling |
| Jared Harris | Lane Pryce |
| Mark Moses | Duck Phillips |
| Talia Balsam | Mona Sterling |
| Kiernan Shipka | Sally Draper |
| Alison Brie | Trudy Campbell |
| Christopher Stanley | Henry Francis |
| Elizabeth Rice | Margaret Sterling |
| Carla Gallo | Karen Ericson |
| Peyton List | Jane Sterling |
| Judy Kain | Olive Healy |
| Laura Regan | Jennifer Crane |
| Julie McNiven | Hildy |
| Deborah Lacey | Carla |
| Alexa Alemanni | Allison |
| Jared Gilmore | Bobby Draper
(as Jared S. Gilmore) |
| Edin Gali | Kurt |
| Derek Ray | Brooks Hargrove |
| Patrick John Hurley | Bruce Pike |
| Veronica Taylor | Eleanor Francis |
| Sewell Whitney | Bandleader |
| Jennifer Dawson | Ethel |
| Anthony Burch | Marty Faraday |
| Shannon Welles | Nellie Sterling |
| Patrick Cavanaugh | Smitty Smith
(uncredited) |
| Hesley Harps | Margaret Sterling's Bridesmaid
(uncredited) |
| Marguerite Gioia Insolia | Secretary
(uncredited) |
| Ralph Kampshoff | Head Chef
(uncredited) |
| Alistair Steel | Wedding Guest
(uncredited) |
| Stewart Strauss | Wedding Guest
(uncredited) |