Paulina of Thuringia or Pauline von Arnstadt (died 13 March 1107) was a pious and wealthy noblewoman of the Holy Roman Empire who founded the double monastery of . She is recognized as a saint in the Roman Martyrology of the Catholic Church. Her feast day is March 14.
Paulina was born around 1050 in Calw to a nobleman named Moricho, who himself became a lay brother of Hirsau Abbey. She was twice married and twice widowed. After the death of her second husband, Ulrich von Scharplan, she retired to establish a hermitage in the forest which became Paulinzella. Her daughter and her son Werner joined her.
Paulina became famous for her needlework. She "had no superior and scarcely any equal in the province of Thuringia where she lived, in the making of gold borders and stoles." Her nuns, too, practised needlework and weaving to support the foundation.
Paulina went on a pilgrimage to Santiago de Compostela and also to Rome. During the latter trip she received the approval of the pope for Paulinzella. On her return journey, she fell from her horse and broke her arm. It never fully healed and she died at Münsterschwarzach Abbey while on her way to Hirsau to escort her monks to their newly built cloisters. She was immediately hailed as a saint by the people. She was interred in her basilica at Paulinzella in 1122. The main source for her life is her Latin biography, , written by her confessor, Sigeboto, around 1150.