This Article explores the involvement of the Malay Rulers in institutionalizing the Constitution of the Federation of Malaya 1957. It aims to examine the validity of the popular statement that claims the Federal Constitution is the end-result of a social contract negotiated among the multi-ethnic society championed by the elite nationalists in Malaya. It further examines the allegation that the sovereignty of the Malay Rulers and the power of the state governments had been retained by the British due to the demand fought by the above group. This qualitative research uses primary sources collected from the historical records and presented in legal history design. The findings show that the Malay Rulers are the supreme authority in institutio...