The 2009 Delray Beach International Tennis Championships was a men's tennis tournament played on outdoor hard courts. It was the 17th edition of the Delray Beach International Tennis Championships, and was part of the International Series of the 2009 ATP Tour. It took place at the Delray Beach Tennis Center in Delray Beach, Florida, United States, from February 23 through March 1, 2009.
The field was headlined by ATP No. 21 and San Jose finalist Mardy Fish, Auckland finalist Sam Querrey, and 2008 Moscow titlist Igor Kunitsyn. Other top seeds competing were Ernests Gulbis, Steve Darcis, Florent Serra, Jérémy Chardy and Lu Yen-hsun.
First-seeded Mardy Fish won the singles title.
| Athlete | Nationality | Ranking* | Seeding | |
|---|---|---|---|---|
| Mardy Fish |  United States | 20 | 1 | |
| Sam Querrey | United States | 34 | 2 | |
| Ernests Gulbis | Latvia | 42 | 3 | |
| Igor Kunitsyn |  Russia | 40 | 4 | |
| Steve Darcis |  Belgium | 49 | 5 | |
| Florent Serra |  France | 51 | 6 | |
| Jérémy Chardy | France | 52 | 7 | |
| Lu Yen-hsun | Chinese Taipei | 59 | 8 |
The following players received wildcards into the main draw:
The following players received a special exempt into the main draw:
The following players received entry from the qualifying draw:
See main article: 2009 Delray Beach International Tennis Championships – Singles. Mardy Fish defeated Evgeny Korolev 7–5, 6–3
See main article: 2009 Delray Beach International Tennis Championships – Doubles. Bob Bryan / Mike Bryan defeated 
Marcelo Melo / André Sá, 6–4, 6–4
