Wibrandis Rosenblatt (1504–1564) was the wife of three religious reformers, who predeceased her: Johannes Oecolampadius (married, 1528–1531), Wolfgang Capito (married, 1532–1541), and Martin Bucer (married, 1542–1551). She was the widow of a Ludwig Keller before she was married to Oecolampadius. She was the mother of 11 children.
She was born in 1504 in Bad Säckingen and raised in Basel. She died a plague victim in Basel in 1564.