Mohamed Noah bin Omar (Jawi: محمد نوح بن عمر‎; 13 August 1897 – 6 September 1991) was a Malaysian politician.

He was one of the leading figures who founded the United Malays National Organisation (UMNO) and became the party’s first chairperson.

[3] Noah married twice in a polygamous manner, firstly to Maimun Abdul Manaf (1903–1968) in 1921 until her death and then to Siti Amirah Kusuma (1916–2014).

His children from his first marriage are Rahah, the widow of Abdul Razak Hussein, who was 2nd Prime Minister from 1970 to 1976, Suhaila, the widow of Hussein Onn, who was 3rd Prime Minister from 1976 to 1981, and Fakhriah who married Abdullah Ahmad, a member of the Johor royal court.

Siti Amirah Kusuma died on 17 July 2014 in Malaysia Airlines Flight 17 (MH17) tragedy at Donetsk Oblast, Ukraine.