Pyhäjärvi (disambiguation)

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