Katariina Tuohimaa (born 28 April 1988) is a Finnish former tennis player. In her career, Tuohimaa won five doubles titles on the ITF Women's Circuit. On 13 August 2007, she peaked at No. 481 in the doubles rankings.
Tuohimaa played six rubbers for Finland in the 2006 Fed Cup. She played college tennis at Texas Christian University.