Johannes Adrianus "Jan" Janssen (pronounced [jɑn jɑnsɛn]; born 19 May 1940) is a Dutch former professional cyclist (1962–1972). He was world champion and winner of the Tour de France and the Vuelta a España. He was the first Dutch rider to win the Tour de France and the first to win the Vuelta a España. He rode the Tour de France eight times and finished all but the first time. He won seven stages and wore the yellow jersey for two days (after stage 16 in 1966 and after stage 22B in 1968).