This is a list of books that topped The New York Times best-seller list in 1965.

Fiction The following list ranks the number-one best-selling fiction books.Adult New York Times Best Seller Lists for 1965

Only three titles topped the list in 1965. The most popular was The Source by James Michener, which dominated the second half of the year, even through a three-week newspaper strike. The other two titles were Herzog, by Saul Bellow, which completed a run at the top for more than half a year, begun in October 1964 (29 weeks), and Up the Down Staircase by Bel Kaufman (8 weeks, and another 32 at No. 2, in all spending 65 weeks in the top 10 bestsellers).John Bear, The #1 New York Times Best Seller: intriguing facts about the 484 books that have been #1 New York Times bestsellers since the first list, 50 years ago, Berkeley: Ten Speed Press, 1992, pp. 93-95 Coincidentally, both of the latter titles, Herzog and Staircase, are epistolary novels, featuring the extensive use of letters.

DateBookAuthor January 3 Herzog Saul Bellow January 10 January 17 January 24 January 31 February 7 February 14 February 21 February 28 March 7 March 14 March 21 March 28 April 4 April 11 April 18 April 25 May 2 May 9 May 16 Up the Down Staircase Bel Kaufman May 23 May 30 June 6 June 13 June 20 June 27 July 4 July 11 The Source James Michener July 18 July 25 August 1 August 8 August 15 August 22 August 29 September 5 September 12 September 19 September 26 October 3 October 10 October 17 Not published due to a newspaper strike October 24 October 31 The Source James Michener November 7 November 14 November 21 November 28 December 5 December 12 December 19 December 26

Nonfiction The following list ranks the number-one best-selling nonfiction books.Adult New York Times Best Seller Lists for 1965 DateBookAuthor January 3 Markings Dag Hammarskjöld January 10 January 17 January 24 January 31 February 7 February 14 February 21 February 28 March 7 March 14 March 21 March 28 April 4 April 11 April 18 April 25 May 2 May 9 May 16 May 23 May 30 June 6 June 13 June 20 June 27 July 4 July 11 July 18 July 25 August 1 The Making of the President 1964 Theodore H. White August 8 August 15 August 22 August 29 September 5 September 12 September 19 September 26 October 3 October 10 October 17 Not published due to a newspaper strike October 24 October 31 Kennedy Ted Sorensen November 7 November 14 November 21 November 28 December 5 December 12 December 19 December 26

See also Publishers Weekly list of bestselling novels in the United States in the 1960s

References