Tuanku Abdul Rahman ibni Almarhum Tuanku Muhammad, GCMG was the first Supreme Head of State or Yang di-Pertuan Agong of Malaya of the Federation of Malaya, eighth Yang di-Pertuan Besar of Seri Menanti and second Yang di-Pertuan Besar of modern Negri Sembilan.
Born Tunku Abdul Rahman at Seri Menanti on August 24, 1895, he was the second son of Tuanku Muhammad ibni Almarhum Tuanku Antah, first Yang di-Pertuan Besar of modern Negeri Sembilan and seventh Yang di-Pertuan Besar of Seri Menanti by his second wife, Tunku Puan Chik.
In 1933, following the death of his father, he succeeded him onto the throne of Negeri Sembilan. Tuanku Abdul Rahman was elected first Yang di-Pertuan Agong or Paramount Ruler of independent Malaya on 3 August 1957 for a five-year term by eight votes to one, defeating the more senior Sultan Abu Bakar of Pahang. As Malay rulers do not traditionally possess crowns, he was installed by kissing the royal kris of state (keris kerajaan) to the beat of the nobat, a tradition which has been followed by every Yang di-Pertuan Agong since.
Tuanku Abdul Rahman died in his sleep at Istana Negara in Kuala Lumpur in the early morning of 1 April 1960. He was buried at the Royal Mausoleum in Seri Menanti, Negeri Sembilan on 5 April 1960.