Josh Lyman is a fictional character from the television series The West Wing, created by Aaron Sorkin. He serves as the Deputy Chief of Staff to President Josiah Bartlet, played by Martin Sheen. Known for his sharp wit and political acumen, Josh is a key strategist in the White House, often navigating complex political challenges. Throughout the series, Josh's character develops significantly, showcasing his dedication to public service and his relationships with other staff members, including Donna Moss, his assistant. His role highlights the inner workings of the U.S. government and the personal dynamics within the Bartlet administration.