Rankuh (Persian: رانكوه) is a city in, and the capital of, Rankuh District of Amlash County, in Gilan province, Iran.

At the 2006 census, its population was 956 in 266 households. The following census in 2011 noted a substantial increase in population to 2,224 people in 669 households. The latest census in 2016 showed a population of 2,154 people in 749 households.