John Patrick Ryan, Sr.KCVO is a fictional character created by author Tom Clancy and featured in his Ryanverse novels, which have consistently topped the New York Times bestseller list over 30 years. Since Clancy's death in 2013, four other authors have continued the Ryan franchise and its other connecting series with the approval of the Clancy family estate: Mark Greaney, Grant Blackwood, Mike Maden, and Marc Cameron.
