ONEOK, Inc. revenue for the last year amounted to 21.70 B USD, the most of which — 15.17 B USD — came from its highest performing source at the moment, Natural Gas Liquids, the year earlier bringing 14.43 B USD. The greatest contribution to the revenue figure was made by United States — last year it brought ONEOK, Inc. 21.70 B USD, and the year before that — 17.68 B USD.