Petrus Särkilahti (a.k.a. Pietari Särkilahti), sometimes written as Petrus Saerkilahti, died in 1529. He was Martin Luther's first Finnish student and one of the early pioneers of teaching science in Finnish language. He spread the idea of the reformation eagerly.

In Turku, Finland, Särkilahti met Mikael Agricola, who became his student. In 1538, the first known books in Finnish were published by Agricola. Petrus Särkilahti died in 1529, and it was up to Agricola to continue his work.