Ludo Dierckxsens was a Belgian racing cyclist. He was best known for winning the 11th stage of the 1999 Tour de France, while competing for Lampre–Daikin. Dierckxsens died during the 1000 km bike ride of Kom op tegen Kanker on 29 May 2025 in Sint-Gillis-bij-Dendermonde. He was 60.