Mark Salter is an American speechwriter from Davenport, Iowa, known for his collaborations with United States Senator John McCain on several nonfiction books as well as on political speeches. Salter has collaborated with John McCain on all seven of their books, including "The Restless Wave," "Faith of My Fathers," "Worth the Fighting For," "Why Courage Matters," "Character Is Destiny," "Hard Call" and "Thirteen Soldiers." He served on Senator McCain’s staff for 18 years.