Thai AirAsia Company Limited ("TAA") is a limited company incorporated and domiciled in Thailand.
Its parent company is Asia Aviation Public Company Limited, a company listed in the Stock Exchange of Thailand, and incorporated in Thailand. TAA is principally engaged in low-fare airline Business Company.

Thai AirAsia, a joint venture between Asia Aviation, who held 51% shareholding in Thai AirAsia (Pre-IPO), and AirAsia Investment "AAI", who held 49%, is incorporated on September 19, 2003 to operate a low-fare airline business with a registered capital of Baht 400,000,000. AAI is a holding company wholly owned by AAB. AAB is a listed company in Bursa Malaysia who operates a low-fare carrier AirAsia in Malaysia.

On May 29, 2012 Thai AirAsia has increased its registered capital to Baht 435,555,600, being the common shares of 43,555,560 shares at the par value of Baht 10 per share. Asia Aviation has subscribed the newly issued shares, raising its shareholding to 55% while AAI was diluted to 45%. AirAsia Group has restructured its investment structure by establishing AirAsia Group Berhad "AAGB" on April 16, 2018 and has assumed the listing status of AAB, holding 100% of AAI's stake.

Thai AirAsia has established, a wholly owned subsidiary, Asia Aviation Center Company Limited on January 27, 2021, to be the academy institution of learning and competency development for aviation tourism, and hospitality industries