Katri Helena
- Born
- 17 August 1945 (81 years)
- Place of birth
- Tohmajärvi, Finland
- Gender
- Female
Katri Helena Kalaoja (née Koistinen; b. 17 August 1945) is a Finnish singer. She rose to fame by releasing her first songs in 1963. She represented Finland twice in the Eurovision Song Contest in 1979 and 1993 with the songs "Katson sineen taivaan" and "Tule Lou".
