Katri Marianne Ylander (born December 17, 1985) is a Finnish singer who rose to popularity after finishing second in Idols Finland 2, the Finnish version of Pop Idol. Ylander received 45% of votes, while the winner, Ilkka Jääskeläinen, received the other 55%. She released her first album in June 2006, releasing a hit single soon afterwards, "Onko Vielä Aikaa?" ("Is there still time?"), which reached number one on the Finnish Radio Top 20 list in the week of August 2.
Ylander was born in Harjavalta, Finland.