Tim Declercq (born 21 March 1989 in Leuven) is a Belgian former cyclist, who last rode for UCI WorldTeam Lidl–Trek. His brother Benjamin was also a professional cyclist before retiring at the end of 2022.

Declerq is known to be a powerful rider who generally acts as a domestique. He earned the nickname "El Tractor" due to his frequent work riding at the front of the peloton. A 2020 poll of riders in the professional peloton by cyclingnews.com named Declercq as the best domestique in the world.

After retiring, he became a coach at his former team Soudal-Quick-Step.