Leicester Cathedral, or St Martin's Church is an Anglican cathedral in the English city of Leicester, and the seat of the Bishop of Leicester.

A church called St Martin's has been on the site for about a thousand years, being first recorded in 1086, when the older Saxon church was replaced by a Norman one. The present building dates to about that age, with the addition of a spire, and various restorations throughout the years.

The tomb of King Richard III is located in the central nave of the church although, according to local tradition, he is not actually buried there. He was originally buried in the Greyfriars Church in Leicester, but his corpse was exhumed under orders from Henry VII and cast into the River Soar.

The church was elevated to a Collegiate Church in 1922, and made a Cathedral in 1927, with the recreation of the Diocese of Leicester.