2004 European Thomas & Uber Cup Preliminaries

The 2004 European Thomas & Uber Cup Preliminaries were the European qualifiers for the 2004 Thomas & Uber Cup in Jakarta, Indonesia. The tournament was held at the Mestská Hala (now City Hall Prešov) in Prešov, Slovakia. A total of 65 teams, including 34 men's teams and 31 women's teams took part in the qualifiers.

Denmark and Germany both qualified for the 2004 Thomas Cup as finalists of the European preliminaries. England qualified for the 2004 Thomas Cup as the team placed third after defeating Poland 3–1 in the third place match.

Qualified teams

 * (23rd appearance)
 * (2nd appearance)
 * (9th appearance)

Qualified teams

 * (14th appearance)
 * (2nd appearance)
 * (6th appearance)