| Species | Felis catus |
|---|---|
| Sex | unknown |
| Died | ca. 1440–1460 Breda, Duchy of Brabant |
| Known for | Mummified cat found in the Grote Kerk Breda |
| Named after | John II, Lord of Polanen and reflects the Flemish heritage of the church's original builders |
Polleke (died ca. 1440-1460) is the name of a 15th-century mummified cat that was discovered in 1906 inside the walls of the Grote Kerk in Breda, Netherlands. The cat is believed to have been deliberately sealed into the church’s structure as a foundation sacrifice—a ritual believed to protect buildings from evil spirits. In 2025, the cat was officially named Polleke and returned to public display in the church.