Koistinen Explained

Koistinen is a Finnish surname. Notable people with the surname include:

• Al Koistinen (born 1948), American former politician
• Hannu Koistinen (born 1966), Finnish kantele maker
• Katri Helena Kalaoja (née Koistinen, born 1945), Finnish singer known by her stage name Katri Helena
• Markus Koistinen (born 1970), retired Finnish shot putter
• Matti Koistinen (born 1986), Finnish ice hockey player
• Otto Koistinen (1925–2020), 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