| Champ: |  Leonardo Mayer |
| Runner: |  David Ferrer |
| Score: | 6–7(3–7), 6–1, 7–6(7–4) |
| Draw: | 48 |
| Seeds: | 16 |
| Type: | singles doubles |
See main article: 2014 International German Open. Fabio Fognini was the defending champion, but lost to Filip Krajinović in the second round.
Leonardo Mayer won the title, defeating David Ferrer in the final, 6–7(3–7), 6–1, 7–6(7–4).
All seeds receive a bye into the second round.
See also: 1 and 1. David Ferrer (final)
See also: 2 and 4. 
Fabio Fognini (second round)
See also: 3 and 3. Tommy Robredo (third round)
See also: 4 and 2. 
Alexandr Dolgopolov (third round)
See also: 5 and 2. 
Mikhail Youzhny (second round)
See also: 6. Roberto Bautista Agut (withdrew)
See also: 7 and 3. Philipp Kohlschreiber (semifinals)
See also: 8 and 4. Marcel Granollers (second round)
See also: 9 and 1. Fernando Verdasco (second round)
See also: 10 and 4. Guillermo García López (second round)
See also: 11 and 2. 
Santiago Giraldo (third round)
See also: 12 and 3. 
Gilles Simon (third round)
See also: 13 and 2. Federico Delbonis (second round)
See also: 14 and 3. João Sousa (second round)
See also: 15 and 4. Carlos Berlocq (second round)
See also: 16 and 1. Andreas Seppi (second round)
See also: 1. Albert Ramos Viñolas (qualified)
See also: 2. 
Thomaz Bellucci (qualifying competition, Lucky loser)
See also: 3. Daniel Gimeno Traver (qualified)
See also: 4. Diego Sebastián Schwartzman (qualifying competition)
See also: 5. Andrey Kuznetsov (qualifying competition)
See also: 6. Facundo Bagnis (qualifying competition)
See also: 7. Marco Cecchinato (qualifying competition)
See also: 8. 
Marsel İlhan (qualified)
See also: 9. 
Gerald Melzer (qualifying competition)
See also: 10. Gastão Elias (qualified)
See also: 11. 
Filip Krajinović (qualified)
See also: 12. Mate Delić (qualified)