Ahmad bin Mohamed Ibrahim (15 May 1916 – 17 April 1999) was a Singaporean lawyer and law professor who served as the first Attorney-General of Singapore between 1965 and 1967.

[3] In 1948, Ahmad stood as an independent candidate in the Municipal Commission Election in Singapore and won.

He was also the legal advisor in the Singapore delegation to the Malaysia Talks in London in 1963, which discussed independence from Britain.

Former Singaporean deputy prime minister Goh Keng Swee once described Ahmad as a man of "tremendous breadth and depth of intellect, whose ability as a legal draftsman is unsurpassed in this country".

Ahmad was the brother of the actor Khalid Ibrahim, who used the stage name Cal Bellini.