Éric Deflandre (born 2 August 1973 in Rocourt) is a former Belgian football right fullback.
Deflandre first signed to Wandre Union but after one year he joined Liège side R.F.C. de Liège. He then left for Germinal Ekeren in 1995. In 1996, he signed for Club Brugge.
In 2000, Deflandre moved to Olympique Lyonnais in France, where he won 3 straight national championships. He returned to Belgium in 2004 and played for Standard Liège.
In 2007-08, he split duty with FC Brussels and F.C. Verbroedering Dender E.H.. On 25 June 2009 Lierse S.K. have signed the right-back from F.C. Verbroedering Dender E.H. on a two-year deal. On 9 August 2010 announced his return to R.F.C. de Liège, where he played for two more seasons before retiring.
Deflandre played his debut match for the national team against The Netherlands in the qualifying stage for the 1998 World Cup. In the competition's first match, he replaced Bertrand Crasson after 22 minutes, and helped to a 0-0 draw against the Netherlands.