The Charleston Open, currently sponsored by Credit One, is a WTA Tour-affiliated professional tennis tournament for women, held every year since 1973.

[5] The tournament celebrated 50 years in 2022 at the newly renovated Credit One Stadium located in Charleston, South Carolina.

[10][11] Credit One Bank became the title sponsor of both the tournament and stadium in July 2021.

It celebrated its 40th year in 2012[14] by naming its main stadium court in honor of Billie Jean King.

The current champion is Danielle Collins, who won the singles tournament in April 2024.