Support and Defend is a thriller novel, written by Mark Greaney and published on July 22, 2014. The book is a spinoff from the Tom Clancy universe and features FBI agent and The Campus operative Dominic “Dom” Caruso, who is President Jack Ryan’s nephew.

It is the first novel in the franchise written after Clancy’s death during the previous year, as well as Greaney’s first solo contribution to the overall series.