Katja Küttner (; born 1971) is a Finnish actress. She won a Jussi Award for Best Actress for Princess (2010).
She was born in 1971 in Oulainen, Finland. She attended for one year and then studied for two years to become a kindergarten teacher. In the meantime, she applied to the Helsinki Theater Academy. She was ultimately accepted in 1994 and graduated with a master's degree in 1998.
She played a grieving mother in ' (2005). She had the lead role of in Princess (2010), for which she won a Jussi Award for Best Actress. She appeared in the series ' (2025).
She and her husband, screenwriter , have three children.