Joshua Claybourn (born June 10, 1981) is an American attorney, author, and historian considered one of the foremost living scholars on Abraham Lincoln’s youth in Indiana.

[3][4] Together with Abby DeMare, he argued in the Indiana Law Review for greater checks and balances on executive branch emergency powers.

[10] He is co-editor (with William Bartelt) of Abe’s Youth: Shaping the Future President, providing source material from the Indiana Lincoln Inquiry.

[11][12] Claybourn also served as a research assistant to Professor Gerard Magliocca during his work on Andrew Jackson and the Constitution: The Rise and Fall of Generational Regimes.

[14][15] Contributors to the project include Cass Sunstein, Gordon S. Wood, John Danforth, Richard Epstein, David Blight, Markos Moulitsas, Alan Taylor, Eleanor Clift, Jim Banks, Nikolas Gvosdev, Ilya Somin, Cherie Harder, Gerard Magliocca, Jason Kuznicki, Cody Delistraty, Spencer Boyer, Ali Wyne, and James Wertsch.