Catherine Marie Pepinster (born 7 June 1959)[1] is an English editor, historian, commentator and writer with a focus on theology, Catholic and Anglican ecumenism, church history, and religion and politics.

In 2017 she published the book The Keys and the Kingdom: The British and the Papacy from John Paul II to Francis.

During her period as editor, she was responsible for covering three papacies, those of John Paul II, Benedict XVI, and Francis.

While editor, Pepinster helped modernise The Tablet by redesigning its online presence and creating social media accounts.

In December 2016, Pepinster stepped down from the position as editor of The Tablet, after serving in the role for thirteen years, and was succeeded by Brendan Walsh.