Bala Eshtuj () is a village in Do Hezar Rural District of Kuhestan District in Tonekabon County, Mazandaran province, Iran.
At the time of the 2006 National Census, the village's population was 119 in 36 households, when it was in Khorramabad District. The following census in 2011 counted 225 people in 79 households. The 2016 census measured the population of the village as 138 people in 49 households.
In 2020, the rural district was separated from the district in the formation of Kuhestan District.