2004 Indesit ATP Milan Indoor – Singles

Martin Verkerk was the defending champion but lost in the quarterfinals to Grégory Carraz.

Antony Dupuis won in the final 6–4, 6–7(12–14), 7–6(7–5) against Mario Ančić.

Seeds
A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.


 * 1) 🇨🇿 Jiří Novák (withdrew because of a leg injury)
 * 2)  Martin Verkerk (quarterfinals)
 * 3) 🇪🇸 Tommy Robredo (quarterfinals)
 * 4) 🇪🇸 Feliciano López (first round)
 * 5)  Ivan Ljubičić (first round)
 * 6) 🇪🇸 Rafael Nadal (second round)
 * 7) 🇦🇲 Sargis Sargsian (second round)
 * 8) 🇸🇰 Dominik Hrbatý (second round)