Where was Masud Rana filmed?
1974 Bangladeshi film
Masud Rana (1974) was filmed in Cox's Bazar and Teacher-Student Centre (TSC), University of Dhaka, 2 places named in its Wikipedia article's Filming section, in Bangladesh. Wikidata records no filming location for it at all, so the article is the only recorded source. Each place says where its claim comes from.
Places per Wikipedia's Filming section
Wikipedia’s Filming section names 2 places. Each links to the sentence that says so.

