Pain Deza () is a village in Kolijan Rostaq-e Sofla Rural District of the Central District in Sari County, Mazandaran province, Iran. It is a southern suburb of the city of Sari, bordering the main urban area to the north. It also borders the villages of Ahi Dasht and Mahdasht to its west and the Tajan River to its east.
At the time of the 2006 National Census, the village's population was 1,705 in 415 households. The following census in 2011 counted 2,019 people in 582 households. The 2016 census measured the population of the village as 1,945 people in 601 households.