The 2004 Millennium International Tennis Championships was an ATP tournament held in Delray Beach, Florida, United States that was part of the International Series of the 2004 ATP Tour.

It was the 12th editions of the tournament and was held from September 13 to September 20.

Unseeded Ricardo Mello won the singles title.

Ricardo Mello defeated Vincent Spadea 7–6(7–2), 6–3 Leander Paes / Radek Štěpánek defeated Gastón Etlis / Martín Rodríguez 6–0, 6–3