The New York Times Fiction Best Sellers of 1970
# The New York Times Fiction Best Sellers of 1970

This is a list of adult fiction books that topped The New York Times Fiction Best Seller list in 1970.

| Date | Book | Author |
| - | - | - |
| January 4 | The Godfather | Mario Puzo |
| January 11 | The Godfather | Mario Puzo |
| January 18 | The Godfather | Mario Puzo |
| January 25 | The Godfather | Mario Puzo |
| February 1 | The Godfather | Mario Puzo |
| February 8 | The French Lieutenant's Woman | John Fowles |
| February 15 | The Godfather | Mario Puzo |
| February 22 | The French Lieutenant's Woman | John Fowles |
| March 1 | The French Lieutenant's Woman | John Fowles |
| March 8 | The French Lieutenant's Woman | John Fowles |
| March 15 | The French Lieutenant's Woman | John Fowles |
| March 22 | The French Lieutenant's Woman | John Fowles |
| March 29 | The French Lieutenant's Woman | John Fowles |
| April 5 | The French Lieutenant's Woman | John Fowles |
| April 12 | The French Lieutenant's Woman | John Fowles |
| April 19 | The French Lieutenant's Woman | John Fowles |
| April 26 | The French Lieutenant's Woman | John Fowles |
| May 3 | The French Lieutenant's Woman | John Fowles |
| May 10 | Love Story | Erich Segal |
| May 17 | Love Story | Erich Segal |
| May 24 | Love Story | Erich Segal |
| May 31 | Love Story | Erich Segal |
| June 7 | Love Story | Erich Segal |
| June 14 | Love Story | Erich Segal |
| June 21 | Love Story | Erich Segal |
| June 28 | Love Story | Erich Segal |
| July 5 | Love Story | Erich Segal |
| July 12 | Love Story | Erich Segal |
| July 19 | Love Story | Erich Segal |
| July 26 | Love Story | Erich Segal |
| August 2 | Love Story | Erich Segal |
| August 9 | Love Story | Erich Segal |
| August 16 | Love Story | Erich Segal |
| August 23 | Love Story | Erich Segal |
| August 30 | Love Story | Erich Segal |
| September 6 | Love Story | Erich Segal |
| September 13 | Love Story | Erich Segal |
| September 20 | Love Story | Erich Segal |
| September 27 | Love Story | Erich Segal |
| October 4 | Love Story | Erich Segal |
| October 11 | Love Story | Erich Segal |
| October 18 | Love Story | Erich Segal |
| October 25 | Love Story | Erich Segal |
| November 1 | Love Story | Erich Segal |
| November 8 | Love Story | Erich Segal |
| November 15 | Love Story | Erich Segal |
| November 22 | Love Story | Erich Segal |
| November 29 | Love Story | Erich Segal |
| December 6 | Love Story | Erich Segal |
| December 13 | Love Story | Erich Segal |
| December 20 | Love Story | Erich Segal |
| December 27 | Love Story | Erich Segal |
