1991 ATP German Open – Doubles
| Doubles | |
|---|---|
| 1991 ATP German Open | |
| Champion | Sergio Casal Emilio Sánchez |
| Runner-up | Cássio Motta Danie Visser |
| Score | 7–6, 7–6 |
| Draw | 28 |
| Seeds | 8 |
The 1991 German Open was a tennis tournament played on outdoor clay courts and was part of the ATP Championship Series of the 1991 ATP Tour. It took place at the Rothenbaum Tennis Center in Hamburg, Germany, from 6 May until 13 May 1991. Sergio Casal and Emilio Sánchez won in the final against Cássio Motta and Danie Visser, 7–6, 7–6.