Karin Rask (until 2005, Karin Lätsim; born April 21, 1979) is an Estonian stage, film and television actress, theatre teacher and clothing designer.

Karin Rask was born as Karin Lätsim in Haapsalu, in Lääne County in 1979. She attended secondary school at Haapsalu Gymnasium, graduating in 1997. From 1997 until 1998, she studied radio and program direction at Tallinn Pedagogical University (now, Tallinn University). In 2002, she graduated from the Higher Theatre School (now, the Estonian Academy of Music and Theatre) in Tallinn. Among her graduating classmates were Priit Võigemast, Ott Aardam, Maria Soomets, Hele Kõre, Mart Toome, Evelin Võigemast, Elisabet Reinsalu, and Argo Aadli.

Rask's first feature film debut (credited as Karin Lätsim) was a small role in the 2002 Elmo Nüganen directed war drama Nimed marmortahvlil, which focuses on a group of young men fighting in the 1918–1920 Estonian War of Independence. The film was based on the 1936 novel of the same name by Albert Kivikas. In 2007, she appeared in another small role in the Dirk Hoyer directed crime drama Võõras. In 2015, Rask appeared in the Margus Paju directed family adventure film Supilinna Salaselts and the following year played the role of Simone in the René Vilbre directed Taska Film comedy Klassikokkutulek. Beginning in 2015, Rask starred on the TV3 thriller Varjudemaa. The series follows Rask's character Rita Metsallik as she returns home to the small village on a fictional island where she grew up after living in Tallinn for twenty years to bury her deceased father, only to discover that his death was not an accident.

She has also appeared in a number of film shorts, most notably 2015's drama Tiibadeta piloot, directed by Leeni Linna and pairing Rask with actor Priit Võigemast.

Rask has also appeared on several Estonian television series; most notably as Lucy on the TV3 drama Kodu keset linna in 2003, and again from 2005 to 2006; as Triin Mets on the popular Kanal 2 crime drama Kelgukoerad from 2007 until 2008;[ and as Kiku on the TV3 drama Nurjatud tüdrukud in 2012. Other appearances on television series include three appearances on the TV3 comedy crime series Kättemaksukontor in 2009 and 2013, and a 2014 appearance on the Kanal 2 crime drama Viimane võmm. In 2017, she had a starring role as Eva in the Kanal 2 drama-mystery series Nukumaja.