The 2009 BSI Challenger Lugano was a professional tennis tournament played on outdoor red clay courts. It was part of the Tretorn SERIE+ of the 2009 ATP Challenger Tour. It took place in Lugano, Switzerland between 8 and 14 June 2009.
| Nationality | Player | Ranking* | Seeding | |
|---|---|---|---|---|
| Stanislas Wawrinka | 18 | 1 | ||
 Romania | Victor Crivoi | 99 | 2 | |
 Argentina | Sergio Roitman | 100 | 3 | |
 Italy | Potito Starace | 104 | 4 | |
| Simon Greul | 111 | 5 | ||
 Brazil | Thiago Alves | 117 | 6 | |
| Argentina | Agustín Calleri | 118 | 7 | |
| Brazil | Thomaz Bellucci | 119 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry a special Exempt into the singles main draw:
The following players received entry from the qualifying draw:
See main article: 2009 BSI Challenger Lugano – Singles. Stanislas Wawrinka def. Potito Starace, 7–5, 6–3
See main article: 2009 BSI Challenger Lugano – Doubles. 
Johan Brunström / Jean-Julien Rojer def. Pablo Cuevas / Sergio Roitman, walkover
