The 2013 Intersport Heilbronn Open was a professional tennis tournament played on hard courts. It was the 25th edition of the tournament which was part of the 2013 ATP Challenger Tour. It took place in Heilbronn, Germany between 23 and 29 January 2013.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 France | Paul-Henri Mathieu | 60 | 1 | |
| Benjamin Becker | 66 | 2 | ||
 Luxembourg | Gilles Müller | 69 | 3 | |
| Björn Phau | 78 | 4 | ||
 Romania | Adrian Ungur | 99 | 5 | |
| Ivo Karlović | 103 | 6 | ||
 Czech Republic | Jan Hájek | 104 | 7 | |
 Belgium | Ruben Bemelmans | 114 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
| Country | Player | Country | Player | Rank1 | Seed | |
|---|---|---|---|---|---|---|
 Sweden | Johan Brunström | Raven Klaasen | 125 | 1 | ||
 Russian Federation | Mikhail Elgin |  Slovakia | Igor Zelenay | 140 | 2 | |
| James Cerretani |  Canada | Adil Shamasdin | 154 | 3 | ||
| Philipp Marx | Romania | Florin Mergea | 165 | 4 |
The following pairs received wildcards into the doubles main draw:
The following pairs received entry as alternates:
Marius Copil / Adrian Ungur
Harry MeehanSee main article: 2013 Intersport Heilbronn Open – Singles.
See main article: 2013 Intersport Heilbronn Open – Doubles.
Johan Brunström / Raven Klaasen def. 
Jordan Kerr / Andreas Siljeström, 6–3, 0–6, [12–10]