Ben Mathis-Lilley is an American journalist and currently serves as a Senior Writer at Slate. He is also the chief news blogger for Slate's news section, The Slatest.

Mathis-Lilley began his career at New York as an editorial assistant in 2004. While at New York, he oversaw "The Approval Matrix," a feature that humorously graphed various things based on two qualities. In June 2012, he was hired by BuzzFeed, where he served as the sports editor until March 2014.