Jan Jozef Alfons Franciscus Krekels is a retired cyclist from the Netherlands. He became Olympic champion in the 100 km team time trial in 1968 with Joop Zoetemelk, René Pijnen and Fedor den Hertog; at the same Games he came in 11th in the road race. He also won the 19th stage of the Tour de France in 1971 and the prologue of Paris–Nice in 1970. He retired from professional cycling in 1978.