Tuppurainen will head the organisation for the next three years.
In addition to Tuppurainen, Tuula Petäkoski-Hult from Pirkanmaa and Sari Melkko from Kymi were elected first and second deputy chairs respectively.
The Social Democratic Women in Finland general assembly meeting was held this weekend in Lappeenranta.
Tuppurainen succeeds Jämsä member of parliament Tuula Peltonen in her new role.
A declaration was adopted during the meeting stating women' equal pay should be one of the key objective of the Finnish policy.
The organisation pointed out that family leaves weaken women wage development, and equitable system of parental leave should be funded by all employees by collecting fees.
