
Front: Predominantly green. King Bhumibol Adulyadej, Rama IX, in the full dress uniform of the Royal Thai Army, bespectacled and facing slightly left, with heavy bullion epaulettes and sash. To the left, the Garuda emblem, then the Thai legend รัฐบาลไทย above the legal-tender line and the spelled-out ยี่สิบบาท. A crowned royal monogram sits at centre, with a large Thai numeral ๒๐ below and the signatures of the Minister of Finance and the Governor of the Bank of Thailand.
Back: King Ananda Mahidol, Rama VIII, in uniform with decorations, standing at right. Behind him the cable stays of the Rama VIII Bridge over the Chao Phraya. At left, the young king walking under a tiered umbrella with officials and attendants during a visit to the Sampheng quarter of Bangkok. A Thai inscription recalling his words on honest civic duty runs at lower right; a large ๒๐ fills the lower field.
Part of the fifteenth series, issued from 2003, and the workhorse small note of Thai daily life for a decade. A redesigned 20 baht of the sixteenth series followed in 2013, and notes bearing King Vajiralongkorn from 2018; this design has been steadily withdrawn from tills but remains legal tender.