Mari Rantanen (born 29 March 1976) is a Finnish politician of the Finns Party currently serving in the Parliament of Finland for the Helsinki constituency.

In its 2020 Yearbook, the Finnish Security Police have identified demographic change as one of the notable ideological drivers of far-right terrorism.

It also noted that views based on the theory of population turnover have been highlighted in a number of far-right terrorist attacks.

[5] In an interview with Iltalehti, Rantanen was asked what she meant by no longer being blue-eyed, and she replied: "I mean exactly what it says."

[5] In 2016, Rantanen wrote on social media that the boats of asylum seekers crossing the Mediterranean Sea should be stopped or otherwise "there will be a war".