Lapinjärvi is a municipality in Finland.
Lapinjärvi may also refer to:
Lapinjärvi (village), the largest village and administrative center of Lapinjärvi municipality Lapinjärvi (lake), a lake in Lapinjärvi Other lakes by this name: Lapinjärvi (Hämeenlinna), a lake in Hämeenlinna. Lapinjärvi (Jyväskylä), a lake in Jyväskylä Lapinjärvi (Jämsä), a lake in Jämsä Lapinjärvi (Karstula), a lake in Karstula Lapinjärvi (Keuruu), a lake in Keuruu Lapinjärvi (Kinnula), a lake in Kinnula Lapinjärvi (Laukaa), a lake in Laukaa and Toivakka Lapinjärvi (Rautavaara), a lake in Rautavaara. Lapinjärvi (Ruokolahti), a lake in Ruokolahti. Lapinjärvi (Viitasaari), a lake in Viitasaari. Lapinjärvi (Äänekoski), a lake in Äänekoski
See also Lapinjärvi Educational Center, training civilian service () personnel