Petri is the Finnish and Basque form of Peter, a name with deep Christian roots. Derived from the Greek Πέτρος (Petros) meaning "stone", Peter was the name given by Jesus to the apostle Simon, as recorded in the New Testament (Matthew 16:18 and John 1:42). Saint Peter became the most prominent of the apostles and is often considered the first pope, contributing to the name's widespread adoption across the Christian world. Usage in Finland In Finland, Petri is a common masculine given name. It was particularly popular from the 1950s through the 1970s. Finnish variants include Petteri and Pietari, while diminutives such as Peetu and Pekka are also in use. The feminine form Petra is found in Finland. Notable Finnish bearers include footballer Petri Pasanen and ice hockey player Petri Kontiola. Usage in Basque Country In the Basque Country, Petri is a traditional form of Peter. It coexists with the variant Peru and the diminutive Peio. Saint Peter (San Petri in Basque) is a patron saint of several Basque churches, and the name has been used locally for centuries. Notable People with the Surname Petri As a surname, Petri is Italian and Germanic in origin. Notable individuals include Carl Adam Petri (1926–2010), a German mathematician who developed Petri nets, a mathematical model for distributed systems. Egon Petri (1881–1962) was a Dutch pianist and composer. Elio Petri (1929–1982) was an Italian film director known for black comedies and political thrillers. The name also appears in the context of Swiss Renaissance printing: Adam Petri (1454–1527) was a publisher in Basel. Key Facts Meaning: Finnish and Basque form of Peter, meaning "stone". Origin: Finnish, Basque. Type: Given name and surname. Usage Regions: Finland (particularly 1940s–1970s), Basque Country, Italy (surname), Germany (surname).