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;
Vice Prime Minister of Mauritius Minister, the National Assembly voted against the bill but provided with an understanding that two cabinet ministers who are senior members just behind the Deputy Prime Minister shall be officially known as Vice-Prime Minister but no office was created, making the position essentially an honorific title. Therefore, in case of absence, illness or sudden death of the Prime Minister, it is only the Deputy Prime Minister who can become the Acting Prime Minister until the Prime Minister resumes office or another is appointed. Vice Prime Minister of Mauritius Vice-Prime Minister of Mauritius () is an honorary title usually carried by