Yasmin K. (born Yasmin Knoch, 27 September 1986 in Soufrière), also performs using the name Y-ass, is a German pop singer. She is most known for appearing in 2001 on the second season of Popstars.

Knoch is the daughter of Oliver Bendt, founder of Goombay Dance Band. Her mother is from the Caribbean island of St. Lucia. Knoch grew up in Hamburg. After completing her abitur, she took lessons in singing, piano, and guitar. She began performing in shows with her father's band. In the year 2000, she played a major role in the musical Buddy.