Wikipedia
Koistinen
Koistinen is a Finnish-language surname that may refer to:
- Anttu Koistinen (born 1993), Finnish kantele player
- Hannu Koistinen (born 1966), Finnish kantele maker
- Katri Helena Kalaoja ( née Koistinen, born 1945), Finnish singer known by her stage name Katri Helena
- Matti Koistinen (born 1986), Finnish ice hockey player
- Otto Koistinen (born 1925), Finnish kantele maker
- Petteri "Kode" Koistinen, Finnish guitarist, member of the Finnish rock band Neljä Ruusua
- Ritva Koistinen (born 1956), Finnish kantele player
- Ville Koistinen (born 1982), Finnish ice hockey player