Prime Minister of Thailand Rajanubhab took over this role. In fact, the office most considered the precursor of that of the prime minister was the ancient office of "Samuha Nayok" (สมุหนายก), which was run by an "Akkhra Maha Senabodi" (อัครมหาเสนาบดี) or "chief minister in charge of civilian affairs". The first Prime Minister of Siam was Phraya Manopakorn Nititada, a judge. The title of the office was changed from "Prime Minister "of Siam"" to "Prime Minister "of Thailand"" in 1945 and then permanently with the renaming of Siam to Thailand in 1949. For most of its existence the office has been occupied by Army leaders;
2013–2014 Thai political crisis other ministers voting in favour of the transfer. These ministers were Anudith Nakornthap (Minister of Information and Communication Technology), Chalerm Yubamrung (Minister of Labour), Kittiratt Na-Ranong (Deputy Prime Minister and Minister of Finance), Plodprasop Suraswadi (Deputy Prime Minister), Police General Pracha Promnok (Minister of Justice), Santi Prompat (Minister attached to the OPM), Siriwat Kajornprasart (Deputy Minister of Agriculture and Cooperatives), Surapong Tovichakchaikul (Deputy Prime Minister and Minister of Foreign Affairs) and General Yuttasak Sasiprapa (Deputy Minister of Defence). The remaining ministers selected Niwatthamrong Boonsongpaisan (Deputy Prime Minister and Minister Commerce) to act as caretaker prime minister in place of Yingluck.