Tuanku Sir Abdul Rahman ibni Almarhum Tuanku Muhammad GCMG (Jawi: توانكو سر عبدالرحمن ابن المرحوم توانكو محمد; 24 August 1895 – 1 April 1960) was the Yang di-Pertuan Besar of Negeri Sembilan from 1933, and the first Yang di-Pertuan Agong of the Federation of Malaya from 1957, until his death in 1960.

Born at Seri Menanti on August 24, 1895,[1] he was the second son of Tuanku Muhammad ibni Tuanku Antah, first Yang di-Pertuan Besar of modern Negeri Sembilan and seventh Yang di-Pertuan Besar of Seri Menanti (1888–1933) by his second wife, Tunku Puan Chik.

He worked at the Federal Secretariat in Kuala Lumpur for a period of one year before being appointed Assistant Collector of Land Revenue in Seremban.

[1] With the approval of his father Tuanku Muhammad, he stayed in the United Kingdom until he completed his studies and received a degree in law.

[1] In London, he was elected first President of the Kesatuan Melayu United Kingdom, one of the earliest Malay nationalist groups.

[5] Abdul Rahman was elected first Yang di-Pertuan Agong or Paramount Ruler of independent Malaya on 31 August 1957 for a five-year term by eight votes to one, defeating the more senior Sultan Abu Bakar of Pahang.

Abdul Rahman was installed as the first Yang di-Pertuan Agong of independent Malaya on 2 September 1957 at the throne room of the Istana Negara.

In honour of Abdul Rahman, all subsequent Yang di-Pertuan Agong of Malaysia have also used the headdress with Dendam Tak Sudah (literally Unending Revenge) style, the fashion employed in Negeri Sembilan.

[7] Abdul Rahman died in his sleep at the Istana Negara in Kuala Lumpur in the early morning of 1 April 1960.

On 2 April 1960, a state funeral procession was held in Kuala Lumpur, whereupon Abdul Rahman's teak coffin was then taken by train to Seremban and later by hearse to the Istana Besar, Seri Menanti.