Tutkabon (Persian: توتکابن)[a] is a city in, and the capital of, Rahmatabad and Blukat District of Rudbar County, Gilan province, Iran.

[4] It also serves as the administrative center for Rahmatabad Rural District.

[5] It is on the Sefīd-Rūd river, in the Alborz (Elburz) mountain range.

At the time of the 2006 National Census, the city's population was 1,671 in 473 households.

[7] The 2016 census measured the population of the city as 1,510 people in 493 households.