Blaker is a village and a former municipality of Akershus county, Norway.

The municipality was established on 1 July 1919, when Aurskog was split in two.

At the time of establishment, Blaker had a population of 2,533.

The village is situated on the east bank of Glomma, with a railway station on Kongsvingerbanen and Blaker Fortress.

The fortress was in use from 1683, expanded to a bastioned star fort in the middle of the 18th century, and decommissioned in 1820.