Katrina Lehis (born 19 December 1994) is an Estonian left-handed épée fencer, 2018 individual European champion, 2021 team Olympic champion, and 2021 individual Olympic bronze medalist.

Coached by Helen Nelis-Naukas and Peeter Nelis, she was a member of the Estonian Junior and Cadet fencing teams since 2009.

In 2014, Lehis won individual gold at the Junior World Fencing Championships and was named Estonian Young Athlete of the Year.

In 2018, Lehis won the individual gold at the 2018 European Fencing Championships.

At the 2020 Tokyo Summer Olympics, she won a gold medal in team épée and bronze in individual épée.