Rob Lowe Sam Seaborn Actor 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 Joshua Malina Will Bailey Actor Hal Holbrook Asst. Secretary of State Albie Duncan Guest Star James Brolin Governor Robert Ritchie Guest Star Kathleen York Andrea Wyatt Guest Star Joanna Gleason Atty. Jordon Kendall Guest Star NiCole Robinson Margaret Guest Star Danica McKellar Elsie Snuffin Guest Star Tony Amendola Qumari U.N. Ambassador Ali Nissir Guest Star John Aniston Alexander Thompson Guest Star Kim Webster Ginger Guest Star Kris Murphy Katie Witt Guest Star Aaron Sorkin Executive Producer, Writer Thomas Schlamme Executive Producer John Wells Executive Producer Neal Ahern Jr. Producer Paul Redford Producer, Writer Kristin Harms Producer Llewellyn Wells Producer Alex Graves Director