Bibliography
- The Grenadier Guards in the War of 1939–1945 (1949) with Patrick Forbes
- Lord of the Isles (1960) on Lord Leverhulme
- People and Parliament (1958)
- The United Nations: A Reply to Its Critics (1963)
- Sissinghurst Castle (1964)
- Great Houses of Britain (1965)
- Diaries & Letters of Harold Nicolson (1966-8) three volumes, editor
- Great Houses of The Western World (1968)
- Alex: The Life of Field Marshal Earl Alexander of Tunis (1973)
- Portrait of a Marriage (1973)
- Letters of Virginia Woolf (1975–1980) six volumes, editor
- The Himalayas (1975)
- Mary Curzon (1977)
- The National Trust Book of Great Houses in Britain (1978)
- Napoleon 1812 (1985)
- Lady Curzon's India: Letters of a Vicereine (1986)
- Two Roads to Dodge City (1986) with Adam Nicolson
- The Village in History (1988) with Graham Nicholson and Jane Fawcett
- Counties of Britain: A Tudor Atlas by John Speed (1989) with Alasdair Hawkyard
- The World of Jane Austen (1991)
- Vita And Harold : The Letters Of Vita Sackville-West And Harold Nicolson (1992) editor
- A Long Life: Memoirs (1998)
- Kent (1999)
- Virginia Woolf, part of the Penguin Lives biography series (2000)
- Fanny Burney: The Mother of English Fiction (2002)
- The Queen and Us : The Second Elizabethan Age (2003)
- Vita Sackville-West : Selected Writings (2003) editor with Mary Ann Caws
Read more about this topic: Nigel Nicolson