David Harold Tribe (born 1931) is a leading secularist and humanist. He was born in Sydney, Australia, but he lived in the United Kingdom for a long time. Tribe joined the University of Queensland's Faculty of Medicine (where he edited the University medical society's journal Trephine), but found that he did not enjoy hospital work and left. It was not long after this that he left Australia for Britain, where he worked at various times as a sketch artist, public relations officer, journalist and lecturer. In 2001, Tribe became an honorary associate of Rationalist International.