The 2011 Marburg Open was a professional tennis tournament played on hard courts. It was the second edition of the tournament which was part of the 2011 ATP Challenger Tour. It took place in Marburg, Germany between 20 and 26 June 2011.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 Spain | Albert Ramos | 100 | 1 | |
 Argentina | Diego Junqueira | 101 | 2 | |
 France | Éric Prodon | 108 | 3 | |
| Simon Greul | 112 | 4 | ||
| Jesse Huta Galung | 116 | 5 | ||
| Argentina | Horacio Zeballos | 126 | 6 | |
 Czech Republic | Ivo Minář | 132 | 7 | |
 Kazakhstan | Yuri Schukin | 141 | 8 |
The following players received wildcards into the singles main draw:
Oliver MarachThe following player received entry as a special exempt into the singles main draw:
The following players received entry from the qualifying draw:
The following player received entry into the singles main draw as a lucky loser:
See main article: 2011 Marburg Open – Singles. Björn Phau def. Jan Hájek, 6–4, 2–6, 6–3.
See main article: 2011 Marburg Open – Doubles. Martin Emmrich / Björn Phau def Federico Delbonis / Horacio Zeballos, 7–6(7–3), 6–2
