Iijärvi is a common name of lakes in Finland. It may refer to Lake Iijärvi (Inari) in Inari, Finnish Lapland Lake Iijärvi (Kuusamo), North-eastern Finland Lake Iijärvi (Suomussalmi), North-eastern Finland Lake Iijärvi (Ristijärvi), Kainuu, Finland Lake Iijärvi (Sulkava), Finland