Marja-Liisa Löyttyjärvi (born 1949) is a Finnish engineer and socialist politician.

[1] She received her Ph.D. from Aalto University in December 2011, and her thesis was related to the construction of the Kemijoki watershed.

[1] She was a member of the Communist Party of Finland and was part of its Uusimaa district organization between 1978 and 1979.

She served in the Espoo city council from the Finnish People's Democratic League between 1973 and 1988.

[1][4] Löyttyjärvi was elected to the Parliament for the Finnish People's Democratic League on 24 March 1979.