Katariina Libe (until 2021 Katariina Ratasepp, 2009–2011 Katariina Kabel; born November 26, 1986) is an Estonian actress and journalist.

In 2012, Ratasepp graduated from the Drama School at Estonian Academy of Music and Theatre, which was supervised by Elmo Nüganen.

She is primarily known for her role in the TV series Padjaklubi (Pillow Club), where she portrayed Eva-Lota Maria from 2014 to 2022.

Ratasepp is the younger sister of actress Ursula Ratasepp.Ratasepp was married to actor Mihkel Kabel from 2009 to 2011, they have a son, Rudolf Mattias, born on 5 January 2009. On 17 December 2016, her second son was born. In 2019, she got engaged to TV and radio journalist Taavi Libe. They got married in July 2021.