The Banka Koper Slovenia Open 2005 was a WTA hard court tennis tournament for women in Portorož . It was part of the 2005 WTA Tour as a Tier IV category tournament . The tournament took place from September 17th to 25th, 2005.
The qualification for the Banka Koper Slovenia Open 2005 took place from September 17th to 19th, 2005. Four qualifying places for the singles and one qualification place for the doubles were played, which entitle them to participate in the main draw of the tournament.