Kati Ojaloo (born 31 January 1990) is an Estonian hammer thrower.

[1] She participated at the 2014 European Athletics Championships.

[2] Her personal best in the event is 71.50 metres set in Pori, Finland in August 2020, it is also the Estonian national record.

She lives in Finland and is in a relationship with Finnish hammer thrower Tuomas Seppänen.

[3] She earned the right to compete in Finnish Championship events since February 2019.