| Date: | 7–13 July |
| Edition: | 37th |
| Category: | World Tour 250 |
| Draw: | 28S / 16D |
| Prize Money: | €426,605 |
| Surface: | Clay / outdoor |
| Location: | Stuttgart, Germany |
| Venue: | Tennis Club Weissenhof |
| Champs: |  Roberto Bautista Agut[1] |
| Champd: |  Mateusz Kowalczyk /  Artem Sitak[2] |
| Main Name: | Stuttgart Open |
The 2014 MercedesCup was a men's tennis tournament played on outdoor clay courts. It was the 37th edition of the Stuttgart Open, and was part of the ATP World Tour 250 series of the 2014 ATP World Tour. It was held at the Tennis Club Weissenhof in Stuttgart, Germany, from 7 July until 13 July 2014. Third-seeded Roberto Bautista Agut won the singles title.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 Italy | Fabio Fognini | 15 | 1 | |
 Russian Federation | Mikhail Youzhny | 16 | 2 | |
| Spain | Roberto Bautista Agut | 23 | 3 | |
| Spain | Feliciano López | 26 | 4 | |
| Philipp Kohlschreiber | 28 | 5 | ||
| Spain | Guillermo García-López | 34 | 6 | |
 Colombia | Santiago Giraldo | 35 | 7 | |
 Argentina | Federico Delbonis | 37 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
The following players received entry as lucky losers:
Marcel Granollers
Denis Istomin
Martin Kližan (left wrist injury)
Édouard Roger-Vasselin (left knee injury)| Country | Player | Country | Player | Rank1 | Seed | |
|---|---|---|---|---|---|---|
 United Kingdom | Colin Fleming | Poland | Mariusz Fyrstenberg | 67 | 1 | |
| Marin Draganja |  Romania | Florin Mergea | 76 | 2 | ||
 Czech Republic | František Čermák | Czech Republic | Lukáš Rosol | 114 | 3 | |
| Mate Pavić |  Brazil | André Sá | 120 | 4 |
The following pairs received wildcards into the doubles main draw:
The following pair received entry as alternates:
Martin Kližan (left wrist injury)See main article: 2014 MercedesCup – Singles.
Roberto Bautista Agut defeated Lukáš Rosol, 6–3, 4–6, 6–2See main article: 2014 MercedesCup – Doubles.
Mateusz Kowalczyk / Artem Sitak defeated Guillermo García-López / 
Philipp Oswald, 2–6, 6–1, [10–7]