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 NiCole Robinson Margaret Guest Star Timothy Busfield Danny Concannon Guest Star Kathleen York Andrea Wyatt Guest Star Jimmy Smits Matthew Santos Guest Star Kristin Chenoweth Annabeth Schott Guest Star Karis Campbell Ronna Guest Star John Wells Executive Producer