Sangachin () is a village in Chahar Farizeh Rural District of the Central District in Bandar-e Anzali County, Gilan province, Iran.
At the time of the 2006 National Census, the village's population was 2,421 in 708 households. The following census in 2011 counted 2,321 people in 731 households. The 2016 census measured the population of the village as 2,305 people in 800 households.