|Date||October 11 – October 17|
|Category||International Series Gold|
|Draw||32S / 16D|
|Surface||Hard / Indoor|
|Martin Damm / Cyril Suk|
The 2004 BA-CA-TennisTrophy was a tennis tournament played on indoor hard courts. It was the 30th edition of the event known that year as the BA-CA-TennisTrophy, and was part of the International Series Gold of the 2004 ATP Tour. It took place at the Wiener Stadthalle in Vienna, Austria, from October 11 through October 17, 2004.