Pyhäjärvi is a common name of lakes in Finland. It may refer to Pyhäjärvi (Tampere region), in the Pirkanmaa Region Pyhäjärvi (Pyhäjärvi), in Pyhäjärvi municipality Pyhäjärvi (Satakunta), in Satakunta Pyhäjärvi (Karelia), in Karelia on the Finland–Russia border Pyhäjärvi (Kymenlaakso), in the northern Kymenlaakso Pyhäjärvi (Saarijärvi), in the Central Finland
Pyhäjärvi has also been the name of several municipalities of Finland: Pyhäjärvi, in Northern Bothnia Pyhäjärvi Ul, former municipality in Uusimaa, now part of Karkkila Otradnoye, Priozersky District, Leningrad Oblast, formerly the Finnish municipality of Pyhäjärvi Vpl., now in Leningrad Oblast, Russia Svyatozero, a lake and former municipality in the Republic of Karelia, was occupied by Finland 1941–44