Tangsir (in Persian : تنگسیر) refers to a person who is originally from a region in Bushehr province between Delvar and Ahram or sometimes from any of these two cities.
The name Tangsir is also associated with the movie made by Amir Naderi, the celebrated Iranian movie-maker. Behruz Vosoughi is the leading actor playing the role of Zar Mohammad (or Shir Mohammad). This movie was based on a novel written by Sadeq Chubak.