Rudolf ("Ruud" or "Rudi") Jozef Krol (born 24 March 1949 in Amsterdam) is a retired Dutch footballer who was capped 83 times for his native country. Most of his career he played for his home town club, Ajax, and he became a coach after retirement. One of the best defenders of his generation, Krol mainly played as a sweeper or left-back, however he could play anywhere across the back four or as a defensive midfielder.