|1.||2006||Pole Continental Wallon Bergasol - Euro Millions||1||1535|
|2.||2007||Pole Continental Wallon - Bergasol - Euro Millions||0||1722|
|3.||2008||Landbouwkrediet - Tonissteiner||16||1052|
|4.||2009||Landbouwkrediet - Colnago||26||812|
|7.||2012||Landbouwkrediet - Euphony||33||884|
|8.||2013||Crelan - Euphony||67||629|
|11.||2016||Wallonie Bruxelles - Group Protect||19||1075|
|12.||2017||WB Veranclassic Aquality Protect||73||714|
Sébastien Delfosse (born 29 November 1982) is a Belgian professional road bicycle racer, who rides for UCI Continental Team WB Veranclassic Aqua Protect. Delfosse's older sister Kathy is also a professional cyclist.
Born in Oupeye, Delfosse has competed as a professional since 2008, when he joined the Landbouwkrediet–Tönissteiner team full-time, having competed as a stagiaire for the team in the second half of 2007. Prior to turning professional, Delfosse also competed for the Pôle Continental Wallon team. Having previously taken a podium finish at the 2012 Classic Loire Atlantique, Delfosse achieved his first two professional UCI victories within the space of a week, in May 2013. His first victory came at the Circuit de Wallonie in Lambusart, when he managed to fend off the rest of the field and soloed to victory, having been part of the early breakaway of the race. The following weekend, Delfosse won the 1.1-rated Rund um Köln in Cologne, after again featuring in the race breakaway. Delfosse out-sprinted two other riders for the honours, beating Pieter Jacobs and Georg Preidler at the finish.
Delfosse moved to the Wallonie-Bruxelles team for the 2014 season, after his previous team – Crelan–Euphony – folded.