The 2009 Ritro Slovak Open was a professional tennis tournament played on indoor hard courts. It was the tenth edition of the tournament which was part of Tretorn Serie+ of the 2009 ATP Challenger Tour. It took place in Bratislava, Slovakia between 16 and 22 November 2009.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 Uzbekistan | Denis Istomin | 89 | 1 | |
 Slovakia | Lukáš Lacko | 91 | 2 | |
 Czech Republic | ||||
| Björn Phau | 107 | 4 | ||
 Finland | Jarkko Nieminen | 109 | 5 | |
 France | ||||
 Austria | Stefan Koubek | 119 | 7 | |
 Israel | Harel Levy | 122 | 8 |
The following players received wildcards into the singles main draw:
The following player received a Special Exempt into the singles main draw:
The following players received entry from the qualifying draw:
See main article: 2009 Ritro Slovak Open – Singles. Michael Berrer def. Dominik Hrbatý, 6–7(6), 6–4, 7–6(3)
See main article: 2009 Ritro Slovak Open – Doubles. Philipp Marx / Igor Zelenay def. Leoš Friedl / David Škoch, 6–4, 6–4
