Gertruda's Oath: A Child, a Promise, and a Heroic Escape During World War II is a 2009 book (originally published in Israel as ha-Shevu'ah in 2007) by Ram Oren and translated by Barbara Harshav.

It follows the story of a Jewish boy, Michael Stolowitzky, and his Catholic nanny, Gertruda Bablinska, and their escape from Poland to Palestine during WWII.

A review in Booklist of Gertruda's Oath wrote "this is memoir uses the techniques of historical fiction, but the author points out that although he has invented dialogue and detail, the characters and events are true."

and "The story is never sentimentalized, and the reality of the genocide is always there.".

[1] Gertruda's Oath has also been reviewed by The Polish Review,[2] the Catholic Standard,[3] Yad Vashem,[4] and the Jewish Book Council.