Nicholas Roosevelt (June 12, 1893 – February 1982) was an American diplomat and journalist. A member of the Roosevelt family and first-cousin once removed of U.S. President Theodore Roosevelt, he was born in New York City to James West Roosevelt, a brother of Hilborne Roosevelt, and Laura Henrietta d'Oremieulx. Brought up in Oyster Bay, New York, he graduated from Harvard University in 1914. He was an attaché at the American Embassy in Paris, secretary to the American mission to Spain in 1916 and 17, vice-governor of the Philippine Islands in 1930, and U.S. minister to Hungary from 1930 to 1933. He was a member of the Council on Foreign Relations and a writer for its journal Foreign Affairs, and a foreign correspondent and editorial writer for the New York Times and New York Herald Tribune from 1921 to 1946. A prolific author, his autobiography, A Front Row Seat (1953), offers a critical view of Franklin D. Roosevelt, a distant cousin, and an inside view of the New York Times. Theodore Roosevelt (1967) drew on Nicholas Roosevelt's unique childhood recollections, his father having been a close friend of Theodore. He was married to Tirzah Gates, the daughter of California State Senator Egbert Gates. Her sister, Dorothy Gates, was the first wife of astrophysicist Fritz Zwicky. He remained lifelong friends with Fritz Zwicky. He lived in Big Sur, California in later life.
- The Philippines: A Treasure and a Problem (1926)
- The Restless Pacific (1928)
- America and England? (1930)
- The Townsend Plan: Taxing for Sixty (1936) (with Francis Everett Townsend)
- A New Birth of Freedom (1938)
- Wanted: Good Neighbors: The Need for Closer Ties with Latin America (1939)
- Venezuela's Place in the Sun: Modernizing a Pioneering Country (1940)
- A Front Row Seat (1953)
- Creative Cooking (1956)
- Good Cooking (1959)
- Theodore Roosevelt: The Man as I Knew Him (1967)
- Conservation: Now or Never (1970)
- Social Security Death Index, SSN:084-09-5009.
- Whittelsey, Charles B. (1902). The Roosevelt Genealogy, 1649–1902.
- "Nicholas Roosevelt is Dead; Writer and Diplomat Was 88". New York Times. February 17, 1982. p. B6.
- "Creative Cooking 1956 Nicholas Roosevelt". Retrieved March 15, 2008.
- "Index to Politicians: Roosevelt". The Political Graveyard. Retrieved March 15, 2008.
- Price, Warren C. (1999). Literature of Journalism. University of Minnesota Press. ISBN 0-8166-0189-5.
- "Short Notices". TIME. April 27, 1967. Archived from the original on October 23, 2012.
- Media related to Nicholas Roosevelt (diplomat) at Wikimedia Commons