Piirainen is a Finnish surname. Notable people with the surname include:
Piirainen is a Finnish surname. Notable people with the surname include: Elisabeth Piirainen (1943–2017), German linguist Holly Piirainen (1983–1993), American murder victim Jaakko Piirainen (1871–1917), Finnish master carpenter and politician Raimo Piirainen (born 1952), Finnish politician
== Similar names == Piironen Piiroinen
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).