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 Jimmy Smits Matthew Santos Guest Star NiCole Robinson Margaret Guest Star Melissa Fitzgerald Carol Fitzpatrick Guest Star Anna Deavere Smith Nancy McNally Guest Star Steve Ryan Secretary of Defense Miles Hutchinson Guest Star Eugene Alper Roman Mindeli Guest Star David Shatraw Ed Merridy Guest Star Lily Tomlin Deborah Fiderer Guest Star Kristin Chenoweth Annabeth Schott Guest Star David Kelsey Staff Sergeant Keltie Guest Star Andrew Borba Alan Zwick Guest Star Evan Arnold Ned Guest Star Karis Campbell Ronna Guest Star John Wells Executive Producer