2003 Tata Open – Singles

Guillermo Cañas was the defending champion but lost in the quarterfinals to Karol Kučera.

Paradorn Srichaphan won in the final 6–3, 6–1 against Kučera.

Seeds
• # 🇦🇷 Guillermo Cañas (quarterfinals)

• # 🇹🇭 Paradorn Srichaphan (champion)

• # Sjeng Schalken (withdrew because of a wrist injury)

• # 🇦🇷 Juan Ignacio Chela (semifinals)

• # Andrei Pavel (first round)

• # 🇩🇪 Rainer Schüttler (quarterfinals)

• # 🇩🇪 Lars Burgsmüller (first round)

• # 🇪🇸 Albert Montañés (second round)