Wonder Girls (원더걸스) is a girl group from Seoul, South Korea, which currently consists of Yeeun (예은), Yubin (유빈), Hyerim (혜림) and Sunmi (선미). Their producer and manager is singer-songwriter Park Jin-Young and the Wonder Girls are signed to his talent agency, JYP Entertainment.

Each of the five original members were selected through auditions.Debuting in early 2007, they became popular in the fall of that year with the song "Tell Me." They have scored five consecutive #1 hit singles: "Tell Me", "So Hot", "Nobody", "2 Different Tears" and "Be My Baby".

In 2008, they won two Daesangs ("Artist of the Year" Awards).The group began their entry into the American market in 2009, with lead single "Nobody"; the single became the first song by a Korean group to enter the Billboard Hot 100.

They are co-managed in the United States by JYP Entertainment and Jonas Group. They managed to place 4th with their hit single "Nobody" on the Canadian single charts for the past 2 weeks of March 2011.

Former member 현아 (김현아 / Kim Hyun A) left in June '07 due to health problems. She is now in girl group 4minute. At the end of 2009, 선미 (이선미 / Lee Sun Mi) left to continue her education.

She was replaced with trainee Hye Lim. She later on returned to singing with the release of her hit-single 24시간이 모자라 in 2013. With the announcement of Wonder Girls' comeback in 2015, Sunmi rejoined the group.

Later in 2015, 선예 (민선예 / Min Sun Ye) and 소희 (안소희 / Ahn So Hee) officially withdrew from the group.