As maiores petrolíferas do mundo, considerando o valor de mercado, são: Saudi Arabian Oil Co. (Saudi Aramco), China Petroleum & Chemical Corp. (SNPMF), PetroChina Co. Ltd. (PCCYF), Exxon Mobil Corp. (XOM), Shell PLC (SHEL), TotalEnergies SE (TTE), Chevron Corp. (CVX), BP PLC (BP), Marathon Petroleum Corp. (MPC) e Valero Energy Corp. (VLO).