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 Marlee Matlin Joey Lucas Guest Star Gabrielle Union Meeshel Anders Guest Star Michael Hyatt Angela Blake Guest Star NiCole Robinson Margaret Guest Star Melissa Marsala Rina Guest Star Bill O'Brien Kenny Thurman Guest Star Joshua Malina Will Bailey Guest Star John Wells Executive Producer