Cornelis Petrus "Kees" Pellenaars was a Dutch road cyclist and coach. In 1934 he won the amateur road race at the world championships, which was the first world road title for the Netherlands. The same year he turned professional and won dozens of competitions over the next 16 years, including the six-day races of Paris (1936), Copenhagen (1937), Ghent (1938) and Brussels (1939).