The 2003 Croatian Bol Ladies Open was a women's tennis tournament played on outdoor clay courts in Bol, Croatia and was part of the Tier III category of the 2003 WTA Tour. It was the tenth edition of the tournament and was held from 28 April until 4 May 2003. Third-seeded Vera Zvonareva won the singles title and earned $27,000 first-prize money.
See main article: 2003 Croatian Bol Ladies Open – Singles. 
Vera Zvonareva defeated 
Conchita Martínez Granados 6–1, 6–3
See main article: 2003 Croatian Bol Ladies Open – Doubles. 
Petra Mandula / 
Patricia Wartusch defeated Emmanuelle Gagliardi / Patty Schnyder 6–3, 6–2