| Date: | 16–22 September |
| Edition: | 11th |
| Category: | World Tour 250 |
| Prize Money: | €410,200 |
| Draw: | 28S / 16D |
| Surface: | Hard |
| Location: | Metz, France |
| Champs: |  Gilles Simon[1] |
The 2013 Moselle Open was a men's tennis tournament held in Metz, France and played on indoor hard courts. It was the 11th edition of the Moselle Open, and part of the ATP World Tour 250 series of the 2013 ATP World Tour. It was held at the Parc des Expositions de Metz Métropole from 16 September until 22 September 2013. Second-seeded Gilles Simon won the singles title.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| France | Jo-Wilfried Tsonga | 8 | 1 | |
| France | Gilles Simon | 16 | 2 | |
 Italy | Andreas Seppi | 22 | 3 | |
| Philipp Kohlschreiber | 25 | 4 | ||
| France | Benoît Paire | 28 | 5 | |
| Sam Querrey | 31 | 6 | ||
| France | Jérémy Chardy | 39 | 7 | |
| Florian Mayer | 44 | 8 |
The following players received wild cards into the singles main draw:
The following players received entry from the singles qualifying draw:
The following player received entry as a lucky loser:
Paul-Henri Mathieu (right leg injury)| Country | Player | Country | Player | Rank1 | Seed | |
|---|---|---|---|---|---|---|
 India | Rohan Bopanna | France | Édouard Roger-Vasselin | 31 | 1 | |
 Austria | Julian Knowle |  Brazil | Marcelo Melo | 52 | 2 | |
 United Kingdom | Jamie Murray |  Australia | John Peers | 76 | 3 | |
| Andre Begemann | Martin Emmrich | 77 | 4 |
The following pairs received wildcards into the doubles main draw:
See main article: 2013 Moselle Open – Singles. Gilles Simon defeated Jo-Wilfried Tsonga, 6–4, 6–3
See main article: 2013 Moselle Open – Doubles. 
Johan Brunström / Raven Klaasen defeated Nicolas Mahut / Jo-Wilfried Tsonga, 6–4, 7–6(7–5)
