Jack Charles Jessup (March 2, 1916 – July 10, 1993) was an American revival preacher and musician. He claimed and was believed by many to have the gift of healing. Through his border blaster radio broadcasts he became well known nationally and at his peak received more than four thousand letters each day, most containing monetary donations. Dogged throughout his ministry by charges of financial and spiritual fraud, his career was ended by a 1968 mail fraud conviction.