Johanna Kristina "Hanna" Grönvall (10 December 1879 in Västra Sallerup, Malmöhus län – 22 May 1953) was a Swedish politician (Swedish Social Democratic Party) and trade union worker.
She played a major role in the improvement of the working conditions for domestic workers as the President of the Stockholm Housemaid Union and the co-founder of the national house maids trade union.
Grönwall was born to the blacksmith Nils Grönvall and Petronella Nilsson.
She eventually settled in Stockholm, and became a member of the Swedish Social Democratic Party and engaged in the working union.
She was a member of the state committee for the working conditions of the house maids.