Mirza Rashid Ali Baig was a son of Sir Mirza Abbas Ali Baig (1859 - 1 June 1932), Chief Minister of the Junagadh district and descendant of the Timur.
He then became private secretary and ghostwriter to Muhammad Ali Jinnah, who wrote the Lahore resolution in 1940 which caused a rupture in the relationship of MRA Baig with him.
Baig then became liaison secretary of the Indian Red Cross Society and the Troops Fund in Bombay.
In 1942 he became sheriff of Bombay and joined the Indian Foreign Service.
Baig held the following posts: He had an older brother, Mirza Osman Ali Baig MBE (1904-1992) who was a British Indian Army cavalry officer, then a member of the colonial Indian Political Service and, after independence, a Pakistani diplomat.