James McMullan (born June 1934) is an illustrator and designer of theatrical posters.
Born in Tsingtao, Republic of China (1912–49), where his grandparents had emigrated from Ireland as missionaries for the Anglican Church, he and his mother fled to Canada at the onset of World War II. In 1944, he enrolled at St. Paul's Boarding School in Darjeeling, India. After his father was killed in a plane crash, he joined his mother in Shanghai, and the two relocated to Vancouver Island, where he completed his high school education.
When McMullan was 17, he and his mother emigrated to the United States, where he studied for a year at the Cornish College of the Arts in Seattle. He joined the United States Army and served at Fort Bragg in North Carolina, where he drew diagrams of where to position propaganda loudspeakers on Sherman tanks.
In 1955, McMullan moved to New York City to continue his art education at Pratt Institute. While studying there he supported himself by illustrating book jackets for authors such as Lawrence Durrell and Jorge Luis Borges. He also did magazine illustrations for Esquire and Sports Illustrated, among others.