Constantin Dumitru Beldie (September 8, 1887 – June 11, 1954) was a Romanian journalist, publicist, and civil servant, famous for his libertine lifestyle and his unapologetic, sarcastic, memoirs of life in the early 20th century. After modest but happy beginnings in life, Beldie played a small but essential part in the promotion of literary modernism, building bridges between the mainstream and the avant-garde.