Pricing group based in Vienna (4)

I believe the answer is:

opec

(Other definitions for opec that I've seen before include "Group of countries with a common oil policy" , "Group of petroleum producing countries, formed in 1961" , "Group of oil-producing countries" , "Cartel of oil-producing countries" , "Organisation intended to control the production and sale of petroleum" .)

I've seen this clue in the Newsday.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.