Margaret Throckmorton later Magdelan (religious name) (1591 – 26 October 1668) was an English prioress of St Monica's convent in Leuven.

[2] She became the prioress of St Monica's in Leuven, a community which her family assisted financially.

St Monica's was one of seven religious communities on the mainland Europe at the time for English nuns forced to escape discrimination in England.

[1] As prioress, she kept the convent solvent by taking in women who wanted to be nuns only if they could bring a good dowry.

[1] Margaret Throckmorton died in Leuven on 26 October 1668, and Mary Thimbleby was unanimously elected to succeed her as prioress.