Determining the biggest company in Oman depends on whether size is measured by total revenue, asset scale, or market capitalization. State-backed energy giants such as Petroleum Development Oman and OQ Group generate the largest aggregate revenues and hold massive national asset portfolios central to the country's petroleum and petrochemical economy. Among publicly traded entities listed on the Muscat Stock Exchange, major institutions like Bank Muscat and Oman Telecommunications Company (Omantel) rank among the largest by market capitalization, profitability, and widespread public shareholder participation in the Omani economy.