Istra may refer to:
Places Istra (Moskva), a river in Russia Istra, Istrinsky District, Moscow Oblast, a town in Istrinsky District of Moscow Oblast, Russia Istra, Krasnogorsky District, Moscow Oblast, an inhabited locality named Istra in Krasnogorsky District, Moscow Oblast Istra Reservoir, a reservoir in Russia near Millerhof palace Istra (Rauma), a river in Rauma Municipality in Møre og Romsdal, Norway Istra or Istria, a peninsula in the Adriatic Sea Istria County, the Croatian portion of the Istria peninsula
Sports FC Istra, an association football club in Russia NK Istra, an association football club in Croatia NK Istra 1961, an association football club in Croatia