Kati K (born Katja Keuter on September 7 , 1999 ) is a German pop singer and influencer. Kati K began her social media career in 2015 as an influencer on Instagram, where she goes by the name kati.ktr. Initially she made singing videos, but then she also presented her private life and gave relationship tips and help with heartbreak. Her first song was released in 2019 with Steine im Bauch. This was followed by further singles such as Vielleicht, Weisse Yeezys and Wegen Dir as well as a collaboration with rapper Edo Saiya with Dunkel. Her songs often deal with heartbreak and more serious topics such as mental health, friendship and deep talk. They have achieved a high number of views on Spotify. Kati K is signed to the Ariola label.
In 2023, her non-fiction book Your Best Friend, a kind of self-help book for broken hearts, was published by S. Fischer Verlag. In 2023, she composed the theme song for the ZDFtivi series Die Mädchen-WG together with pianist Lockerlouis and played in season 18, episode 8.
In 2024, she achieved her first chart position in the German singles charts with a collaboration with rapper Finch called Erwischt. The song reached number 14 in the German charts.