Katarina Bengtsdotter Gylta, in Latin: Catharina Benedicta (1520 – 3 June 1593), was a Swedish nun of the Bridgettine Order, Abbess of Vadstena Abbey in 1553–1564 and 1565–1593.
The abbey was, however, still benefited by many private benefactors: in 1568, she received large donations from Queen Karin Månsdotter and Jöran Persson during the illness of Erik XIV of Sweden.
It is likely that it was due to the Queen that the Vadstena Abbey was visited by a cardinal of the Pope, Antonio Possevino, whom Gylta received later the same year.
The abbey was during his visitation reformed according to the latest regulations of the Catholic Church, and Katarina Bengtsdotter Gylta and her prioress swore the Tridentian oath from 1564.
In 1587, she hosted the monarch and Crown Prince Sigismund, and during their visit, the first great Catholic mass since the reformation was held.