The 2009 Ethias Trophy was a professional tennis tournament played on indoor hard courts. It was the fifth edition of the tournament which was part of the Tretorn SERIE+ of the 2009 ATP Challenger Tour. It took place in Mons, Belgium between 5 and 11 October 2009.
Singles main-draw entrants
Seeds
Rankings are as of September 28, 2009.
Other entrants
The following players received wildcards into the singles main draw: Ruben Bemelmans Arthur de Greef David Goffin Yannick Vandenbulcke
The following players received entry from the qualifying draw: Sergei Bubka Jérôme Haehnel Dominik Hrbatý Illya Marchenko
Champions
Singles
Janko Tipsarević def. Sergiy Stakhovsky, 7–6(4), 6–3
Doubles
Denis Istomin / Evgeny Korolev def. Alejandro Falla / Teymuraz Gabashvili, 6–7(4), 7–6(4), [11–9]