Seidi Helena Alexandra Haarla (born 1 January 1984) is a Finnish actress.
She played the female lead in Juho Kuosmanen's film Compartment No.
In 2005, she studied acting at the Russian State Institute of Performing Arts in Saint Petersburg.
In 2021, she took on the female leading role of Laura in Juho Kuosmanen's film drama Compartment No.
Her performance earned her critical acclaim and an award as one of the European Shooting Stars 2021.