The 2012 Sparkassen Open was a professional tennis tournament played on clay courts. It was the 19th edition of the tournament which was part of the 2012 ATP Challenger Tour. It took place in Braunschweig, Germany between 2 and 8 July 2012.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 Argentina | Carlos Berlocq | 37 | 1 | |
 Brazil | Thomaz Bellucci | 80 | 2 | |
 Spain | Rubén Ramírez Hidalgo | 82 | 3 | |
| Tobias Kamke | 84 | 4 | ||
| Björn Phau | 88 | 5 | ||
 Estonia | Jürgen Zopp | 95 | 6 | |
| Argentina | Horacio Zeballos | 98 | 7 | |
 Czech Republic | Jan Hájek | 105 | 8 |
The following players received wildcards into the singles main draw:
Carlos BerlocqThe following players received entry as a special exempt into the singles main draw:
The following players received entry from the qualifying draw:
See main article: 2012 Sparkassen Open – Singles.
Thomaz Bellucci def. Tobias Kamke, 7–6(7–4), 6–3See main article: 2012 Sparkassen Open – Doubles.
Tomasz Bednarek / Mateusz Kowalczyk def. 
Harri Heliövaara / 
Denys Molchanov, 7–5, 6–7(1–7), [10–8]
