thumb|right|200px|A Regina Protmann memorial in [[Braniewo.]]
Regina Protmann (1552 – 18 January 1613) was a Roman Catholic religious sister. She founded the Sisters of Saint Catherine and was a pioneer in the establishment of hospitals as well as schools for girls. Her first biographer was the Jesuit Engelbert Keilert who described her as an intelligent and well-versed woman with a deep faith and sense of conviction.
Her beatification was celebrated on 13 June 1999 in Warsaw.
Life
Regina Protmann was born in Braniewo (Braunsberg) in 1552 and to Peter Protmann and Regina née Tingel. Her father was a merchant and local patrician. Her uncle was a councilman.
Protmann became familiarized with religious and political matters during the time of the Protestant Reformation and the Counter Reformation. She joined a Marian group that the Jesuits had set up and she entrusted herself to their spiritual care.