PTT Public Company Limited (PTT) has again been ranked Number 1 in Thailand and Number 2 in the Southeast Asia region by Fortune Southeast Asia 500 for 2026, marking the third consecutive year. This reflects its strong business performance potential, international competitiveness, and its vital role in driving the country's energy security while generating sustainable growth.

Sansiri and AP Thailand have stayed in the Fortune Southeast Asia 500 for a third year, highlighting the resilience of leading Thai developers despite a weak housing market.