List of The New York Times number-one books of 1945

This is a list of books that topped The New York Times best-seller list in 1945.

Fiction
The following list ranks the number-one best-selling fiction books. 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).

Nonfiction
The following list ranks the number-one best-selling nonfiction books.