The 2009 Banka Koper Slovenia Open was a women's tennis tournament played on outdoor hard courts. It was the fifth edition of the Banka Koper Slovenia Open, and was part of the WTA International tournaments of the 2009 WTA Tour. It took place in Portorož, Slovenia, from 20 July through 26 July 2009. First-seeded Dinara Safina won the singles title.