Tim Declercq (born 21 March 1989 in Leuven) is a Belgian cyclist, who currently rides for UCI WorldTeam Quick-Step Alpha Vinyl Team. His brother Benjamin is also a professional cyclist.

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.