The New York Times Fiction Best Sellers of 1945
# The New York Times Fiction Best Sellers of 1945

This is a list of adult fiction books that topped The New York Times Fiction Best Seller list in 1945. Seven books topped the list that year, the longest on top being The Green Years, which dominated the winter months (17 weeks). Other particularly popular titles included A Lion in the Streets (12 weeks on top), Captain from Castile (7 weeks) and The Black Rose (18 weeks including 4 in 1946).

| Date | Book | Author |
| - | - | - |
| January 1 | The Green Years | A.J. Cronin |
| January 8 | The Green Years | A.J. Cronin |
| January 15 | The Green Years | A.J. Cronin |
| January 22 | The Green Years | A.J. Cronin |
| January 29 | The Green Years | A.J. Cronin |
| February 5 | The Green Years | A.J. Cronin |
| February 12 | The Green Years | A.J. Cronin |
| February 19 | The Green Years | A.J. Cronin |
| February 26 | The Green Years | A.J. Cronin |
| March 4 | The Green Years | A.J. Cronin |
| March 11 | The Green Years | A.J. Cronin |
| March 18 | The Green Years | A.J. Cronin |
| March 25 | The Green Years | A.J. Cronin |
| April 1 | The Green Years | A.J. Cronin |
| April 8 | The Green Years | A.J. Cronin |
| April 15 | The Green Years | A.J. Cronin |
| April 22 | Earth and High Heaven | Gwethalyn Graham |
| April 29 | Earth and High Heaven | Gwethalyn Graham |
| May 6 | The Green Years | A.J. Cronin |
| May 13 | Captain from Castile | Samuel Shellabarger |
| May 20 | Captain from Castile | Samuel Shellabarger |
| May 27 | Captain from Castile | Samuel Shellabarger |
| June 3 | Captain from Castile | Samuel Shellabarger |
| June 10 | Captain from Castile | Samuel Shellabarger |
| June 17 | Captain from Castile | Samuel Shellabarger |
| June 24 | Captain from Castile | Samuel Shellabarger |
| July 1 | A Lion is in the Streets | Adria Locke Langley |
| July 8 | A Lion is in the Streets | Adria Locke Langley |
| July 15 | A Lion is in the Streets | Adria Locke Langley |
| July 22 | A Lion is in the Streets | Adria Locke Langley |
| July 29 | A Lion is in the Streets | Adria Locke Langley |
| August 5 | A Lion is in the Streets | Adria Locke Langley |
| August 12 | A Lion is in the Streets | Adria Locke Langley |
| August 19 | A Lion is in the Streets | Adria Locke Langley |
| August 26 | A Lion is in the Streets | Adria Locke Langley |
| September 2 | A Lion is in the Streets | Adria Locke Langley |
| September 9 | A Lion is in the Streets | Adria Locke Langley |
| September 16 | A Lion is in the Streets | Adria Locke Langley |
| September 23 | So Well Remembered | James Hilton |
| September 30 | The Black Rose | Thomas B. Costain |
| October 7 | The Black Rose | Thomas B. Costain |
| October 14 | The Black Rose | Thomas B. Costain |
| October 21 | The Black Rose | Thomas B. Costain |
| October 28 | The Black Rose | Thomas B. Costain |
| November 4 | The Black Rose | Thomas B. Costain |
| November 11 | The Black Rose | Thomas B. Costain |
| November 18 | The Black Rose | Thomas B. Costain |
| November 25 | The Black Rose | Thomas B. Costain |
| December 2 | The Black Rose | Thomas B. Costain |
| December 9 | The Black Rose | Thomas B. Costain |
| December 16 | The Black Rose | Thomas B. Costain |
| December 23 | The Black Rose | Thomas B. Costain |
| December 30 | The Black Rose | Thomas B. Costain |
