Petr Píšek was a nobleman and landowner in the Kingdom of Bohemia at the end of the 14th and beginning of the 15th century. He was a loyal to King Wenceslaus IV.
Biography.
Petr was from a wealthy family. He owned several estates in the vicinity of Kutná Hora, and was known for his generous donations to local churches. Petr was mentioned as patron of with other members of the Píšek family beginning in 1371. His patronage was disputed by other local landowners with whom he feuded. 
From 1391 to 1399, Petr served as .:99 In 1394, Petr was noted as administering Suchdol, likely with his brother Vácslav and other relatives. He held the castle until it was transferred to Hanuš of Píšek in 1405.
After King Wenceslaus IV was captured in 1402 by Sigismund of Hungary, Petr had his holding at confiscated. His ownership was later reinstated by Wenceslaus after he was released in 1404. In 1402, Suchdol Castle was first explicitly mentioned in the historical records, with Petr stated to be the burgrave of the fortress. That December, he defended the castle against the forces of Sigismund during the . The castle remained in the possession of the Píšek family until the onset of the Hussite Wars.
In 1405, Petr founded a chapel in Kutná Hora that was known as the Píšek Chapel. It eventually came under the ownership of Pavel of Píšek, a nephew of Petr.:91
In popular culture.
Petr is depicted in the 2025 video game "", where he was portrayed by Petr Nárožný.