Martin Sheen President Josiah "Jed" Bartlet Actor Stockard Channing Abigail "Abbey" Bartlet Actor John Spencer Chief of Staff Leo McGarry Actor Bradley Whitford Dep. Chief of Staff Josh Lyman Actor Allison Janney Press Secretary Claudia Jean "C.J." Cregg Actor Richard Schiff Communications Dir. Toby Ziegler Actor Dulé Hill Charlie Young Actor Janel Moloney Donna Moss Actor Joshua Malina Will Bailey Actor Mary McCormack Kate Harper Actor Marlee Matlin Joey Lucas Guest Star Mary-Louise Parker Amy Gardner Guest Star Tim Matheson John Hoynes Guest Star Lily Tomlin Deborah Fiderer Guest Star NiCole Robinson Margaret Guest Star Emily Procter Ainsley Hayes Guest Star Anna Deavere Smith Nancy McNally Guest Star Timothy Busfield Danny Concannon Guest Star Annabeth Gish Elizabeth Bartlet Westin Guest Star Nina Siemaszko Ellie Bartlet Guest Star Elisabeth Moss Zoey Bartlet Guest Star Allison Smith Mallory O'Brien Guest Star Kathleen York Andrea Wyatt Guest Star Teri Polo Helen Santos Guest Star Jimmy Smits Matthew Santos Guest Star Kristin Chenoweth Annabeth Schott Guest Star Gary Cole Vice President Bob Russell Guest Star Ramon De Ocampo Otto Guest Star Karis Campbell Ronna Guest Star Renee Estevez Nancy Guest Star John Wells Executive Producer