The 2011 BMW Ljubljana Open was a professional tennis tournament played on clay courts. It was the 20th edition of the tournament which was part of the 2011 ATP Challenger Tour. It took place in Ljubljana, Slovenia between 19 and 25 September 2011.
Singles main draw entrants
Seeds
1 Rankings are as of September 12, 2011.
Other entrants
The following players received wildcards into the singles main draw: Toni Androić Tomislav Brkić Tom Kočevar-Dešman Tilen Žitnik
The following players received entry from the qualifying draw: Mirza Bašić Daniele Giorgini Dino Marcan Diego Schwartzman
The following players received entry from a lucky loser spot: Enrico Burzi
Champions
Singles
Paolo Lorenzi def. Grega Žemlja, 6–2, 6–4
Doubles
Aljaž Bedene / Grega Žemlja def. Roberto Bautista Agut / Iván Navarro, 6–3, 6–7(10–12), [12–10]