Maria Kalaniemi (born 1964) is a Finnish accordionist. She was originally classically trained, but has become mostly as folk musician having played this music from childhood, besides her classical music studies, and also at the folk music department of the Sibelius Academy.
Groups she is or has been involved with are:
She has also worked and recorded with the Swedish fiddler Sven Ahlbäck, the popular Finnish singer Katri Helena, singer/actor/flautist Vesa-Matti Loiri, Finnish accordionist Kimmo Pohjonen and many others. In 2004, she was the special guest at the concert in London with the BBC Concert Orchestra and the Finnish fiddler group JPP playing duets with Timo Alakotila plus a piece by Alakotila for accordion, orchestra and JPP written for this occasion.