Im Yoo-na, known professionally as Yoona, stands as one of the most prominent and versatile entertainers in South Korea, celebrated for her groundbreaking work as a singer, actress, and model. She first captured the public imagination as a member of the iconic girl group Girls' Generation, which debuted in 2007 under SM Entertainment. With her striking visuals, graceful stage presence, and warm charisma, Yoona quickly became the group's center and one of its most recognizable faces, helping to define the Korean Wave that swept across Asia and the world. Her transition from K-pop idol to acclaimed actress has solidified her status as a true Hallyu star, earning her both critical praise and a devoted global fanbase.

Born on May 30, 1990, in Seoul, South Korea, Yoona displayed an early passion for performance, training in dance and singing from a young age. She joined SM Entertainment as a trainee in 2002, enduring five years of rigorous preparation before her debut. During this period, she began making small appearances in music videos and television, including a cameo in the drama Two Outs in the Ninth Inning. Her dedication paid off when she debuted as a member of Girls' Generation in August 2007. The group's infectious single "Into the New World" launched them into stardom, and their subsequent hits like "Gee," "Genie," and "I Got a Boy" cemented their legacy as one of the best-selling girl groups in history. Yoona's role as the group's visual and lead dancer made her a household name.

Alongside her music career, Yoona pursued acting with remarkable success. She made her first major television appearance in the family sitcom Unstoppable Marriage in 2007, but her breakthrough came with the romantic comedy You Are My Destiny in 2008, where she played the lead role. The drama achieved peak ratings of over 40%, earning her the Best New Actress award at the KBS Drama Awards. She continued to build her acting portfolio with leading roles in dramas such as Cinderella Man and the historical romance Love Rain, the latter of which paired her with Jang Keun-suk. Her performance in the medical drama The K2 showcased a darker, more intense side, proving her range as an actress. Her most celebrated role came in the 2017 drama The King in Love, where she played a strong-willed woman caught in a love triangle, further demonstrating her ability to carry a series.

Yoona's film career began with a supporting role in the 2017 disaster film Confidential Assignment, alongside Hyun Bin, which was a box office hit. She reprised her role in the 2022 sequel, Confidential Assignment 2: International. Her performance in the romantic comedy Exit in 2019, where she played a parkour expert opposite Jo Jung-suk, earned her critical acclaim and the Best Actress award at the Baeksang Arts Awards. She also starred in the family drama Miracle: Letters to the President, showcasing her ability to blend humor with emotional depth. In 2023, she took on the lead role in the drama King the Land, a romantic comedy that became a global hit on Netflix, reaffirming her status as a top-tier actress.

Throughout her career, Yoona has received numerous accolades, including multiple Best Actress awards and recognition as one of the most influential figures in Korean entertainment. She has also been a sought-after model for luxury brands and has served as a UNICEF ambassador, using her platform for philanthropic work. In 2023, she left SM Entertainment after 16 years to join Lee Seung-gi's agency, Humanoid, signaling a new chapter in her career. As of 2025, Yoona continues to balance her music activities with acting projects, remaining a beloved and enduring figure in the entertainment industry, admired for her talent, beauty, and unwavering work ethic.