Rob Lowe Sam Seaborn Actor Martin Sheen President Josiah "Jed" Bartlet Actor Bradley Whitford Dep. Chief of Staff Josh Lyman Actor John Spencer Chief of Staff Leo McGarry Actor Richard Schiff Communications Dir. Toby Ziegler Actor Allison Janney Press Secretary Claudia Jean "C.J." Cregg Actor Dulé Hill Charlie Young Actor Janel Moloney Donna Moss Actor Stockard Channing Abigail "Abbey" Bartlet Actor Emily Procter Ainsley Hayes Actor Kathryn Joosten Mrs. Landingham Actor Marlee Matlin Joey Lucas Guest Star Ed Begley Jr. Seth Gillette Guest Star Tony Plana Mickey Troop Guest Star Richard Riehle Officer Jack Sloan Guest Star Ted McGinley Mark Gottfried Guest Star Bill O'Brien Kenny Thurman Guest Star Adam Alexi-Malle President's Translator Guest Star Glenn Morshower Mike Chysler Guest Star Gregory Alan Williams Robbie Mosley Guest Star Devika Parikh Bonnie Guest Star Kim Webster Ginger Guest Star Ralph Meyering Jr. Tom Guest Star Aaron Sorkin Executive Producer, Writer Thomas Schlamme Executive Producer John Wells Executive Producer Kristin Harms Producer Llewellyn Wells Producer Christopher Misiano Director