Thai Airways International Public Company Ltd. office buildings at Suwannaphum International Airport (fig.) in Samut Prakan. The building on the left is home to the company's Operation Control Centre, while the building below houses the catering department.

The buildings bear the company's trademark logo (fig.), which consists of a graphic representation of a stylized purple, magenta and gold jampah flower (fig.), in use since 1975 and created by Walter Landor Associates.

With the comprehensive rebranding of THAI, launched in April 2005, the existing jampah flower has been retained, but the logo was redefined with a modified palette of vibrant colours, including a darker hue of purple. The trademark logo is used everywhere, from the aircraft and company vehicles, to ticket offices and signage at airports, and can be seen worldwide on the tailfins of all THAI airplanes.