The 1999 ATP Buenos Aires was an ATP Challenger Series tennis tournament held in Buenos Aires, Argentina. The tournament was held November 15 to 22, 1999.
| 1999 ATP Buenos Aires | |
|---|---|
| Date | November 15–22, 1999 |
| Edition | 27th |
| Champions | |
| Singles | |
 Franco Squillari | |
| Doubles | |
| Guillermo Cañas / Martín García | |
Finals edit
Singles edit
Franco Squillari defeated Hernán Gumy 5–7, 6–1, 6–4
Doubles edit
Guillermo Cañas / Martín García defeated 
Paul Rosner / 
Dušan Vemić 6–4, 6–-4