Joshua Michael Zeitz (born 1974) is an American historian and former Democratic politician.

He has held faculty positions at Harvard, Cambridge and Princeton and is the author of four books.

from Swarthmore College (1996), with Highest Honors, and earned an A.M. (1998) and a Ph.D. (2002) in American history from Brown University.

[2] He is the author of three books, co-author and editor of a high school history textbook, and has written numerous academic and non-academic articles.

Zeitz's most recent book, Lincoln's God: How Faith Transformed a President and a Nation, was published by Viking Press in 2023.