Seinäjoki (disambiguation)
Seinäjoki is the name for:
- Seinäjoki , a city in western Finland
- Seinäjoki (Verwaltungsgemeinschaft) , an administrative community of the Finnish landscape of southern Ostrobothnia
- (1521) Seinäjoki , an asteroid of the main belt
- Seinäjoki Crocodiles , a Finnish American football club