The 2013 Delray Beach International Tennis Championships was a professional men's tennis tournament played on hard courts. It was the 21st edition of the tournament which was part of the World Tour 250 series of the 2013 ATP World Tour. It took place in Delray Beach, United States between February 25 and March 3, 2013. Unseeded Ernests Gulbis, who entered the main draw as a qualifier, won the singles title.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| John Isner | 16 | 1 | ||
| Tommy Haas | 18 | 2 | ||
| Sam Querrey | 21 | 3 | ||
 Japan | Kei Nishikori | 22 | 4 | |
 Ukraine | Alexandr Dolgopolov | 23 | 5 | |
| Kevin Anderson | 30 | 6 | ||
 Spain | Feliciano López | 47 | 7 | |
 Belgium | Xavier Malisse | 48 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
The following player received entry as lucky loser:
Mardy Fish (heart problems)
Lukáš Lacko Feliciano López (arm injury)
Gaël Monfils Kei Nishikori (side injury) Michael Russell (leg injury)| Country | Player | Country | Player | Rank1 | Seed | |
|---|---|---|---|---|---|---|
 Belarus | Max Mirnyi |  Romania | Horia Tecău | 17 | 1 | |
| Ivan Dodig |  Brazil | Marcelo Melo | 49 | 2 | ||
 United Kingdom | Colin Fleming |  Australia | John Peers | 104 | 3 | |
 Sweden | Johan Brunström | Raven Klaasen | 105 | 4 |
The following pairs received wildcards into the doubles main draw:
See main article: article and 2013 Delray Beach International Tennis Championships – Singles.
Édouard Roger-Vasselin, 7–6(7–3), 6–3See main article: article and 2013 Delray Beach International Tennis Championships – Doubles.
James Blake / Jack Sock defeated Max Mirnyi / Horia Tecău, 6–4, 6–4