Joseph Marchand (August 17, 1803 – November 30, 1835) was a French missionary in Vietnam, and a member of the Paris Foreign Missions Society.
Marchand was born in Passavant, in the Doubs department of France. In 1833, he joined the Lê Văn Khôi revolt led by Lê Văn Khôi, son of the late governor of southern Vietnam Lê Văn Duyệt. He vowed to overthrow Emperor Minh Mạng and replace him with My Duong, the son of Minh Mạng's late elder brother Nguyễn Phúc Cảnh, who were both Catholics. Marchand and Khoi appealed to other Catholics to join in overthrowing Minh Mạng and installing a Catholic emperor. They quickly seized the Citadel of Saigon in an uprising lasting two years.
He was arrested and later executed in 1835 in Saigon, subsequently being made a Catholic martyr after having his flesh pulled from his bones by tongs (the torture of a thousand cuts).
Marchand was canonized by Pope John Paul II in 1988. His feast day is November 30, and his joint feast day with the Vietnamese Martyrs is November 24.