2003 Copa Colsanitas – Singles

Fabiola Zuluaga was the defending champion and successfully defended her title, by defeating Anabel Medina Garrigues 6–3, 6–2 in the final.

Seeds
The first two seeds received a bye into the second round. • # 🇦🇷 Paola Suárez (semifinals)

• # Katarina Srebotnik (semifinals)

• # 🇪🇸 Cristina Torrens Valero (first round)

• # 🇨🇴 Fabiola Zuluaga (champion)

• # 🇮🇹 Flavia Pennetta (quarterfinals)

• # 🇪🇸 Conchita Martínez Granados (quarterfinals)

• # 🇸🇪 Åsa Svensson (second round)

• # 🇩🇪 Marlene Weingärtner (first round)