Thammarak Isaragura na Ayuthaya
 Thammarak Isarangkura na Ayuthaya (Thai: ธรรมรักษ์ อิศรางกูร ณ อยุธยา) is a former Thai military officer Member of Parliament co-founder of the Thai Rak Thai Party and former defence minister. He was forced into hiding in the 2006 Thailand coup and his whereabouts was unknown.Thammarak is of Chinese descent and prior to the adoption of the Na Ayuthaya family's current family surname they went by the old family surname of na Krungthep.