Zaigrayevo (Russian: Заигра́ево; Buryat: Загарай, Zagarai) is an urban locality (an urban-type settlement) and the administrative center of Zaigrayevsky District of the Republic of Buryatia, Russia.

As of the 2010 Census, its population was 5,586.

[2] Within the framework of administrative divisions, Zaigrayevo serves as the administrative center of Zaigrayevsky District.

[1] As an administrative division, the urban-type settlement (inhabited locality) of Zaigrayevo is incorporated within Zaigrayevsky District as Zaigrayevo Urban-Type Settlement[1] (an administrative division of the district).

[10] As a municipal division, Zaigrayevo Urban-Type Settlement is incorporated within Zaigrayevsky Municipal District as Zaigrayevo Urban Settlement.