|Municipality||Ukmergė district municipality|
|Time zone||EET (UTC+2)|
|• Summer (DST)||EEST (UTC+3)|
Belazariškiai used to belong to the landed estate of the Polish noble family of Tekla Przecławska. From 1923 to 1939 the village was located in Wiłkomierz county in Wilno Voivodeship, north-eastern Second Polish Republic.
After the Nazi German and Soviet invasions of Poland in September 1939 the village was transferred to Lithuania according to the Soviet–Lithuanian Mutual Assistance Treaty.