Teunis ("Teun") Mulder (born 18 June 1981 in Zuuk, Gelderland) is a Dutch track cyclist. He is a former keirin World Champion and won a silver in the team sprint with Theo Bos and Tim Veldt. Mulder also won four world cup classics in the team sprint and keirin. He competed for his native country at the 2004 Summer Olympics in Athens, Greece, finishing 10th at the individual sprint, 6th at the team sprint (with Theo Bos and Jan Bos) and 11th at the 1 km time trial, while he was eliminated in the first repechage round of the keirin competition. At the 2012 Summer Olympics, he won the bronze medal in the men's keirin.
Mulder was appointed as a member of the inaugural UCI Athletes' Commission in 2011.