Kristiina Ehin (born July 18, 1977) is an Estonian poet, translator, singer and songwriter.

Ehin studied at University of Tartu with a degree in philology and specializes in folklore. In 2004, she acquired master's degree in the Estonian language and comparative folklore field at the University of Tartu. The master's thesis topic was "The Possibilities for Interpretation of the Oldest and Newer Lied of Estonia in the Female-Religious Perspective". She has worked as a teacher at Vodja school.

Ehin has sung in the ensemble Sinimaniseele and from 2012, in the ensemble Naised Köögis (English: Women in the Kitchen), whose members are Katrin Laidre, Sofia Joons and Kairi Leivo. She represented Estonia at the satellite event of the 2012 Summer Olympics in London, Poetry Parnassus, which took place from 26 June to 1 July 2012.

From 2015 to 2016, Ehin was Professor of Liberal Arts at the University of Tartu.

Ehin is a daughter of Andres Ehin and Ly Seppel. She has a son named Hannes. Her husband is musician Silver Sepp. They have a daughter named Luike born in 2016.

Ehin is a follower of the Estonian native faith, Maausk.