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 Lily Tomlin Deborah Fiderer Guest Star NiCole Robinson Margaret Guest Star Janeane Garofalo Louise Thornton Guest Star Jimmy Smits Matthew Santos Guest Star Kristin Chenoweth Annabeth Schott Guest Star Alan Alda Senator Arnold Vinick Guest Star Evan Arnold Ned Guest Star Karis Campbell Ronna Guest Star Steve Ryan Secretary of Defense Miles Hutchinson Guest Star Thomas Kopache Assistant Secretary of State Bob Slatterly Guest Star Renee Estevez Nancy Guest Star Tom Everett Guest Star Andrew Bernstein Director John Wells Executive Producer