Sir Abdullah Haroon (1 January 1872 – 27 April 1942) (Urdu: عبداللہ ہارون) (also spelled Seth Haji Sir Abdoola Haroon) was a British Indian politician and businessman who made major contributions towards developing and defining the role of Muslims in economic, educational, social and political fields in the Indian subcontinent.

[5] Abdullah Haroon first joined the Indian National Congress party in 1917 and started to participate in the Independence movement of India.

[1] In 1930, he attended the All-India Muslim Conference and in the same year, he formed the Sind United Party on the pattern of the Unionist Party (Punjab) which called for the separation of Sindh from the Bombay Presidency, which then actually took place in April 1936 after the enactment of the Government of India Act, 1935.

He was knighted by King George VI in the 1937 Coronation Honours list and came to be known as Sir Abdullah Haroon.

[6] Meanwhile the decline of the Sind United Party led him to organize the Muslim League in Sindh in 1938 and he was elected its president in 1939.

Haroon headed the Reception Committee and his welcome address, which set the tone for the conference, was considered quite radical at the time.

[2] Abdullah Haroon was widely considered to be so honest in his conduct with people that even Mahatma Gandhi had remarked about him, "I will trust this man with a blank cheque".