Maria Sid-Achrén (née Maria Sid, born 13 May 1968) is a Finnish actress. She is best known for her role in the Finnish satire television program Donna Paukku. Sid lives and works in Finland and Sweden. She was appointed director of Stockholm City Theatre in 2019. She played Anna Valli in Musta valo [fi]. In 2024, she won a Best ActressKristallen for her performance as Isa Stenberg in the Swedish drama series Smärtpunkten [sv].